// ==UserScript==
// @name         SHY网络练兵技术员自动答题（分享版）
// @namespace    https://doubao.local/
// @version      1.5.14
// @description  网络练兵（lui 框架）答题页自动答题：内置氯碱设备/仪表技术员题库共 1000 题，自动匹配答案并点击，自动下一题、自动提交、自动重考。兼容脚本猫(ScriptCat)与油猴(Tampermonkey)。
// @match        *://*.sanyougroup.cn:3000/*
// @run-at       document-idle
// @grant        GM_setValue
// @grant        GM_getValue
// @grant        GM_xmlhttpRequest
// @connect      *
// ==/UserScript==


/* ============================================================
 * 网络练兵-氯碱技术员自动答题（分享版） v1.5.14
 *
 * ▍功能
 *   1. 内置题库（1000 题：氯碱设备 + 仪表技术员），装上即用，无需单独导入
 *      ※ 始终使用内置题库，不受浏览器里旧版本残留题库影响
 *   2. 自动匹配题干（一字之差容错、按题型过滤、隐藏字符清理）→ 按选项原始编号点答案（应对乱序）
 *   3. 答完自动点「下一题」，直到最后一题
 *   4. 面板勾选「自动提交」：答完自动交卷并确认弹窗（有未命中的题自动取消提交）
 *   5. 面板勾选「自动重考」：交卷后自动点「重新考试」继续下一场（上限默认 10 场）
 *   6. 进入答题页自动开跑；「停止」立即生效，不会自动重开
 *   7. 面板「未命中明细」：所有答不上/跳过的题都会记录完整原文，方便排查
 *
 * ▍答题节奏
 *   每题固定 1.3 秒，节奏稳定一致；答题统一由主循环轮询，页面变化不再抢答
 *
 * ▍安装
 *   1. 浏览器安装 脚本猫(ScriptCat) 或 油猴(Tampermonkey)
 *   2. 打开本脚本安装链接 → 确认安装
 *   3. 打开网络练兵答题页，右上角出现悬浮面板即生效
 *
 * ▍发布者必读（分享前请处理）
 *   1. 【已配置】@match 与域名白名单已按答题平台 px.sanyougroup.cn 填好
 *   2. 发布到脚本猫后，把脚本主页地址填进 @updateURL / @downloadURL
 *   3. 本脚本用于自动答题，使用前请确认符合平台规则，后果由使用者自行承担
 * ============================================================ */


(function () {
    'use strict';

    /* ============================================================
     * 分享版：平台域名白名单（已按答题平台配置好，一般无需再改）
     * ============================================================ */
    const ALLOWED_HOSTS = ['sanyougroup.cn'];

    // 不在白名单的网站直接不运行（无面板、无任何动作）
    if (ALLOWED_HOSTS.length && !ALLOWED_HOSTS.some(h => location.hostname.includes(h))) return;


    /* ============================================================
     * 一、配置区（已按"网络练兵"答题页结构配置）
     * ============================================================ */
    const CONFIG = {
        // 题目容器：每题的外层元素（网络练兵：topicExam 里每个 table.tb_normal 是一道题）
        questionContainer: '#topicExam table.tb_normal',

        // 题干元素：容器内取题目文字（strong 在第一个 td 里）
        questionText: 'tr:first-child td',

        // 选项元素：第二行 td 里的 label / 单选 / 多选控件
        optionSelector: 'div.lui_exam_active_option, tr:last-child td label, tr:last-child td input[type="radio"], tr:last-child td input[type="checkbox"]',

        // 答题模式：click = 点击选项
        mode: 'click',

        // 判断题选项文字（不同平台叫法不同，按需增删）
        judgeTrue: ['正确', '对', '√'],
        judgeFalse: ['错误', '错', '×'],

        // 自动点"下一题"：答完当前题后自动切到下一题（一页一题的平台需要）
        autoNext: true,
        // 自动点下一题前等待的毫秒（给平台留出记录答案的时间）
        nextDelay: 800,
        // 也可手动指定"下一题"按钮选择器（留空则按文字"下一题"自动找）
        nextButton: '',

        // 自动提交（默认关闭，可在面板勾选开启）：
        // 答完最后一题后自动点"提交试卷"，并自动确认弹窗。
        // 安全保护：本次考试只要有题"未命中题库"没答上，会自动取消提交。
        autoSubmit: false,
        // 提交按钮可能出现的文字（精确匹配，绝不乱点）
        submitButtonTexts: ['提交试卷', '交卷', '提交答案', '提交'],

        // 自动重考（默认关闭，可在面板勾选开启）：
        // 交卷成功后自动点"重新考试"，继续下一场，循环刷题。
        autoRetake: false,
        // 自动重考场次上限（防止无限刷题；0 = 不限，建议保留上限）
        retakeMax: 10,
        // "重新考试"按钮文字（精确匹配）
        retakeButtonTexts: ['重新考试'],

        // 每题之间固定延时（毫秒），节奏稳定一致、不波动
        minDelay: 1300,
        maxDelay: 1300,

        // 是否监听页面变化、自动续答下一题（一页一题的平台必须开）
        watchNext: true,
    };

    /* ============================================================
     * 二、题库加载
     * ============================================================ */
    const EMBEDDED_BANK = [{"id":1,"type":"single","q":"属于设备技术管理任务的是（）。","options":["确保设备的技术状况不下降或得到改善","建立设备状态管理的原始依据","建立设备管理规章制度和工作流程","贯彻公司设备操作规程与维护制度"],"answer":["A"]},{"id":2,"type":"single","q":"设备选型应遵循的原则是（）。","options":["生产上适用，质量上可靠，经济上合理","生产上适用，技术上先进，经济上合理","技术上先进，质量上可靠，经济上合理","生产上适用，技术上先进，质量上可靠"],"answer":["A"]},{"id":3,"type":"single","q":"国家质检总局《特种设备作业人员考核规则》规定,《特种设备作业人员考试申请表》由用人单位签署意见,明确申请人身体状况能够适应所申请考核作业项目的需要,经过(  ),有3个月以上申请项目的实习经历。","options":["操作技能培训","技术培训合格","安全教育","安全教育和培训"],"answer":["D"]},{"id":4,"type":"single","q":"特种设备使用单位应当对其使用的特种设备进行（  ）维护保养和（  ）自行检查，并作出记录。","options":["年度，随机","定期，经常性","经常性，定期","发现问题，相应号召"],"answer":["C"]},{"id":5,"type":"single","q":"《中华人民共和国特种设备安全法》明确国家对特种设备实行目录管理。特种设备目录由国务院负责特种设备安全监督管理的部门制定报(  )批准后执行。","options":["人大常委会","特种设备安全监察局","国务院","市场监督管理局"],"answer":["C"]},{"id":6,"type":"single","q":"控制设备摩擦、减少和消除设备磨损的一系列技术方法和组织方法，称为（  ）。","options":["设备摩擦控制","设备润滑管理","设备日常维护","设备更新"],"answer":["B"]},{"id":7,"type":"single","q":"下列关于设备管理说法中，错误的是（ 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）。","options":["动密封","静密封","静连接","法兰连接"],"answer":["B"]},{"id":15,"type":"single","q":"在一般机械传动中，若需要带传动时，应优先选用（ ）。","options":["圆形带传动","同步带传动","V型带传动","平型带传动"],"answer":["C"]},{"id":16,"type":"single","q":"《中华人民共和国特种设备安全法》第十三条规定特种设备生产、经营、使用单位及其主要负责人对其生产、经管、使用的特种设备(  )负责。","options":["经济运行","高效率","节能","安全"],"answer":["D"]},{"id":17,"type":"single","q":"根据《压力容器安全监察规程》，能够对压力容器进行划类的首要条件是不是(  )大于某一限定值。","options":["设计压力","工作压力","最高工作压力","液压试验压力"],"answer":["C"]},{"id":18,"type":"single","q":"安全阀、压力表检验周期一般为（  ）。","options":["半年","一年","一年半","两年"],"answer":["B"]},{"id":19,"type":"single","q":"压力容器必须定期检验，检验周期一般为（  ）。","options":["1年","2年","3年","4年"],"answer":["C"]},{"id":20,"type":"single","q":"压力容器不属于外观检查的内容是（）。","options":["外表面的腐蚀、保温层的破损、脱落","支承或支座的损坏、基础下沉、倾斜、开裂","壁厚测定、无损检测、水压试验","检漏孔、信号孔的漏液、漏气"],"answer":["C"]},{"id":21,"type":"single","q":"特种作业人员连续离开特种设备作业岗位达（）月以上者，应当重新进行培训考核经考核合格后方可重新上岗。","options":["3个月","6个月","12个月","24个月"],"answer":["B"]},{"id":22,"type":"single","q":"设备、机组、贮罐、管道等的防静电接地线，应（）与接地体或接地干线相连。","options":["单独","共同","避开","禁止"],"answer":["A"]},{"id":23,"type":"single","q":"安全阀的作用(   )。","options":["保压","截止","输送","泄压"],"answer":["D"]},{"id":24,"type":"single","q":"导致液环压缩机启动跳车的原因不包括（）。","options":["轴承润滑不良","汽水分离器液位过高","进气阀门开度过大","平衡阀门未打开"],"answer":["C"]},{"id":25,"type":"single","q":"造成细破机卡料的原因不包括（）。","options":["入料粒度过大","颚板磨损过度","肘板磨损过度","排料粒度过小"],"answer":["C"]},{"id":26,"type":"single","q":"粘度是润滑油的一项重要指标，对工作环境温差大的设备，为保证润滑效果，一般夏季选用粘度（ ）冬季选用粘度（ ）。","options":["大   小","小   大","小   小","大   大"],"answer":["A"]},{"id":27,"type":"single","q":"两台同型号的离心泵串联使用目的是（）。","options":["增加扬程","增加流量","增加扬程和流量"],"answer":["A"]},{"id":28,"type":"single","q":"弹簧在不受外力作用时的高度称为（ ）。","options":["工作高度","自由高度","有效高度"],"answer":["B"]},{"id":29,"type":"single","q":"在砂轮机上磨刀具，应站在（　　）操作。","options":["正面","任意","侧面","反面"],"answer":["C"]},{"id":30,"type":"single","q":"拧紧长方形布置的成组螺母时，应从（　 ）。","options":["对角顶点开始","任意位置开始","中间开始"],"answer":["C"]},{"id":31,"type":"single","q":"(    )常用来检验工件表面或设备安装的水平情况。","options":["测微仪","轮廓仪","百分表","水平仪"],"answer":["D"]},{"id":32,"type":"single","q":"多台起重机协吊设备的关键在于（     ）的问题。","options":["同步","高度","机具性能"],"answer":["A"]},{"id":33,"type":"single","q":"每一垫铁组应尽量减少垫铁的块数,且不宜超过(    )。","options":["4块","5块","6块","3块"],"answer":["B"]},{"id":34,"type":"single","q":"装配时，使用可换垫片，衬套和镶条等，以消除零件间的累积误差或配合间隙的方法是（   ）。","options":["修配法","选配法","调整法"],"answer":["C"]},{"id":35,"type":"single","q":"滚动轴承加热安装时加热温度尽量控制在（    ）。","options":["120~130℃","80~90℃","60~70℃","150~160℃"],"answer":["B"]},{"id":36,"type":"single","q":"泵出现气蚀现象通常的症状是：有响声和振动，（   ）下降，同时效率也降低。","options":["压力和比转数","压力和流量","比转数和流量"],"answer":["B"]},{"id":37,"type":"single","q":"对管束和壳体温差不大，壳程物料较干净的场合可选（    ）换热器","options":["浮头式","固定管板式","U型管式"],"answer":["B"]},{"id":38,"type":"single","q":"在下列四种类型的联轴器中，能补偿两轴的相对位移以及可以缓和冲击、吸收振动的是(    ) 。","options":["凸缘联轴器","齿式联轴器","弹性套柱销联轴器"],"answer":["C"]},{"id":39,"type":"single","q":"对于离心压缩机的喘震，下列处理方法正确的是（   ）。","options":["关小出口阀门","降低出口压力","减小流量","增大流量"],"answer":["B"]},{"id":40,"type":"single","q":"焊接时开坡口的目的主要是为了（   ）。","options":["增加熔宽","保证焊透","增大熔合比","降低熔合比"],"answer":["B"]},{"id":41,"type":"single","q":"螺杆空压机的单向阀由于防止压缩机停机时（  ）倒流。","options":["压缩空气","冷却水","润滑油"],"answer":["A"]},{"id":42,"type":"single","q":"在起重吊装中，选择设备吊点的依据是设备的（  ）。","options":["重量","重心","材料","材质"],"answer":["B"]},{"id":43,"type":"single","q":"在工程图样上，齿轮分度圆的线型为（  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直安装，不可倾斜。","options":[],"answer":["正确"]},{"id":1350,"type":"judge","q":"二次仪表，是指仪表示值信号不直接来自工艺介质的各种仪表的总称。","options":[],"answer":["正确"]},{"id":1351,"type":"judge","q":"法兰取压法特点是上下游取压孔中心线至孔板前后端面的间距均为25.4±0.8mm。","options":[],"answer":["正确"]},{"id":1352,"type":"judge","q":"工作介质为水、汽时，石棉橡胶板垫片的最大工作压力为6.0MPa，最高工作温度为450℃","options":[],"answer":["正确"]},{"id":1353,"type":"judge","q":"管道仪表流程图中，被测变量及仪表功能组合为TSA时，表示温度联锁报警。","options":[],"answer":["正确"]},{"id":1354,"type":"judge","q":"积分调节的缺点是有滞后作用。","options":[],"answer":["正确"]},{"id":1355,"type":"judge","q":"基本调解规律有比例调节规律、积分调节规律和微分调节规律。","options":[],"answer":["正确"]},{"id":1356,"type":"judge","q":"将两支同型号热电偶的正负极正确接起来，可实现两点温度差的测量。","options":[],"answer":["正确"]},{"id":1357,"type":"judge","q":"进行流量仪表的流量标定时，在水流量标定系统的组成中，需要用于切换结构同步的计时器，来测定流体流入计量槽的时间△T。","options":[],"answer":["正确"]},{"id":1358,"type":"judge","q":"静电能够引起火灾爆炸的原因，在于静电放电火花具有点火能量，才会起火爆炸。","options":[],"answer":["正确"]},{"id":1359,"type":"judge","q":"均匀控制系统一般兼顾两个被控变量液位和流量都在允许范围内缓慢的变化。","options":[],"answer":["正确"]},{"id":1360,"type":"judge","q":"利用阀门定位器能实现分程控制。","options":[],"answer":["正确"]},{"id":1361,"type":"judge","q":"灵敏度和分辨率是分析仪的重要技术指标，也是一对功能性上的矛盾指标。","options":[],"answer":["正确"]},{"id":1362,"type":"judge","q":"流量计的流量标定装置种类，按标定介质分有 液体流量标定装置，气体流量标定装置。","options":[],"answer":["正确"]},{"id":1363,"type":"judge","q":"螺纹的要素有牙型角、直径、线数、螺距及旋向。","options":[],"answer":["正确"]},{"id":1364,"type":"judge","q":"屏蔽电缆及屏蔽电缆的屏蔽层必须接地，接地点应在控制室一侧。","options":[],"answer":["正确"]},{"id":1365,"type":"judge","q":"气动执行机构选择，如果是大口径和高压差，应选用活塞式执行机构。","options":[],"answer":["正确"]},{"id":1366,"type":"judge","q":"气动执行机构选择，如果是大转矩蝶阀，应选用气动长行程执行机构。","options":[],"answer":["正确"]},{"id":1367,"type":"judge","q":"汽包三冲量控制系统是一个前馈与串级控制组成的复合控制系统。","options":[],"answer":["正确"]},{"id":1368,"type":"judge","q":"燃烧是一种同时伴有发光、发热的激烈的氧化反应，具有发光、发热和生成新物质的特征。","options":[],"answer":["正确"]},{"id":1369,"type":"judge","q":"生产中，既调节又要切断时，可选用偏心旋转阀。","options":[],"answer":["正确"]},{"id":1370,"type":"judge","q":"使用HART手操器时，连接到这个回路的任意连接点都可进行通信。","options":[],"answer":["正确"]},{"id":1371,"type":"judge","q":"涡街旋涡流量计和电磁流量计的输出电流是与介质流量成线性关系，而不是开方关系，","options":[],"answer":["正确"]},{"id":1372,"type":"judge","q":"信号接地电阻应小于10Ω。","options":[],"answer":["正确"]},{"id":1373,"type":"judge","q":"压力式温度计中的毛细管越长，则仪表反应时间越慢。","options":[],"answer":["正确"]},{"id":1374,"type":"judge","q":"一般联锁系统用的是电磁阀是在通电状况下工作。","options":[],"answer":["正确"]},{"id":1375,"type":"judge","q":"一般情况下，被测介质温度高于60℃时，压力表前就需要加装冷凝圈（环形弯或U型冷凝弯）。","options":[],"answer":["正确"]},{"id":1376,"type":"judge","q":"仪表的测量范围为20~100度，那么它的量程为80度。","options":[],"answer":["正确"]},{"id":1377,"type":"judge","q":"用丝锥（螺丝攻）在孔中切削出螺纹称攻丝，用板牙在圆杆上切削出外螺纹称为套丝。","options":[],"answer":["正确"]},{"id":1378,"type":"judge","q":"在爆炸性气体混合物中加入N2会使爆炸极限的范围变窄。","options":[],"answer":["正确"]},{"id":1379,"type":"judge","q":"气动活塞执行机构分为比例式和两位式两种。","options":[],"answer":["正确"]},{"id":1380,"type":"judge","q":"电动执行机构分为直行程、角行程两种形式。","options":[],"answer":["正确"]},{"id":1381,"type":"judge","q":"调节阀的几种流量特性：快开特性，对数特性，直线，等百分比，抛物线 。","options":[],"answer":["正确"]},{"id":1382,"type":"judge","q":"管道内的流体速度，一般情况下，在管道中心线处的流速最大，在管壁处的流速等于零。","options":[],"answer":["正确"]},{"id":1383,"type":"judge","q":"安装椭圆齿轮流量计可以不需要直管段。","options":[],"answer":["正确"]},{"id":1384,"type":"judge","q":"椭圆齿轮流量计的进出口差压增大，泄漏量增大，流体介质的粘度增大，泄漏量减小。","options":[],"answer":["正确"]},{"id":1385,"type":"judge","q":"在测量范围内涡轮流量变送器的仪表常数，是在常温下用水标定的。","options":[],"answer":["正确"]},{"id":1386,"type":"judge","q":"浮筒液面计测量液面时,为了保证浮筒在浮筒室内自由运动,因此浮筒液位计 的垂直安装要求非常严格.","options":[],"answer":["错误"]},{"id":1387,"type":"judge","q":"在用差压变送器测量液位的液面时,差压记得安装高度可以不作规定,只要维护方便就行.","options":[],"answer":["错误"]},{"id":1388,"type":"judge","q":"当用热偶测量温度时,若连接导线用的是补偿导线,就可以不考虑热偶的冷端补偿.","options":[],"answer":["错误"]},{"id":1389,"type":"judge","q":"铜热电阻的测温范围比铂热电阻测温范围宽.","options":[],"answer":["错误"]},{"id":1390,"type":"judge","q":"体积流量仪表在测量能引起堵塞的介质流量时，必须进行定期清洗。","options":[],"answer":["正确"]},{"id":1391,"type":"judge","q":"调节器的比例度越小，则放大倍数越大，比例调节作用越强。","options":[],"answer":["正确"]},{"id":1392,"type":"judge","q":"积分时间越长，积分作用越弱。","options":[],"answer":["正确"]},{"id":1393,"type":"judge","q":"在自动调节系统中除了比例调节可单独应用外，积分调节和微分调节都不能单独采用。","options":[],"answer":["正确"]},{"id":1394,"type":"judge","q":"用万用表测量电阻时，没有反复调整零点造成的误差为疏忽误差。","options":[],"answer":["错误"]},{"id":1395,"type":"judge","q":"若雷诺数相同，流体的运动就是相似的。","options":[],"answer":["正确"]},{"id":1396,"type":"judge","q":"测流量的孔板材料一般采用不锈钢或碳素钢。","options":[],"answer":["正确"]},{"id":1397,"type":"judge","q":"常用标准节流装置为：孔板、喷嘴、文丘利管、1/4圆喷嘴.","options":[],"answer":["错误"]},{"id":1398,"type":"judge","q":"角接取压孔板和法兰取压孔板只是取压方式不同，单标准孔板的本体结构是一样的。","options":[],"answer":["正确"]},{"id":1399,"type":"judge","q":"执行机构为正作用表示调节阀为气开式，和阀体安装无关。","options":[],"answer":["错误"]},{"id":1400,"type":"judge","q":"被调介质含有固体悬浮物时，宜选用快开特性的调节阀。","options":[],"answer":["错误"]},{"id":1401,"type":"judge","q":"在相同的温度变化范围内，分度号Pt100的热电阻比Pt10的热电阻变化范围大，因而灵敏度较高。","options":[],"answer":["正确"]},{"id":1402,"type":"judge","q":"用电容式液位计测量导电液体的液位时，液位变化相当于两电极间的介电常 数在变化。","options":[],"answer":["错误"]},{"id":1403,"type":"judge","q":"用电容式液位计测量电介质的液位时，液位变化相当于电极面积在改变。","options":[],"answer":["错误"]},{"id":1404,"type":"judge","q":"转子流量计的环形流通截面是变化的，基本上同流量大小呈正比，但流过环形间隙的流速变化不大。","options":[],"answer":["正确"]},{"id":1405,"type":"judge","q":"转子流量计的压力损失大，并且随流量的大小而变化。","options":[],"answer":["错误"]},{"id":1406,"type":"judge","q":"浮子流量计的浮子沾污后对精度影响不大。","options":[],"answer":["错误"]},{"id":1407,"type":"judge","q":"用一台压力变送器，一台输入输出型安保器、一台记录仪、一台调节器、一台带阀门定位器的调节阀可连成一个压力记录调节回路。","options":[],"answer":["正确"]},{"id":1408,"type":"judge","q":"一台气动薄膜调节阀，若阀位在全行程的50%，则通过阀的流量也就是最大流量的50%","options":[],"answer":["错误"]},{"id":1409,"type":"judge","q":"在电阻值不变的情况下，加在电阻两端的电压与通过电阻的电流成正比。","options":[],"answer":["正确"]},{"id":1410,"type":"judge","q":"多个电阻串联时，通过每个电阻的电流都相等。","options":[],"answer":["正确"]},{"id":1411,"type":"judge","q":"一次检测点可以安装在工艺管道上，但不可以安装在工艺设备上。","options":[],"answer":["错误"]},{"id":1412,"type":"judge","q":"使用标准节流装置进行流量测量时，流体必须是充满和连续流经管道的。","options":[],"answer":["正确"]},{"id":1413,"type":"judge","q":"节流装置的孔板安装应在管道吹扫后和试压前进行。","options":[],"answer":["正确"]},{"id":1414,"type":"judge","q":"标准节流装置是在流体的层流型工况下工作的。","options":[],"answer":["错误"]},{"id":1415,"type":"judge","q":"简单地说，法兰取压就是在法兰边上取压。","options":[],"answer":["正确"]},{"id":1416,"type":"judge","q":"角接取压法是上下游侧取压孔中心至孔板前后端面的间距各等于取压孔径的2／3。","options":[],"answer":["错误"]},{"id":1417,"type":"judge","q":"为了便于安装，水平管道上的取压口一般从顶部或侧面引出。","options":[],"answer":["正确"]},{"id":1418,"type":"judge","q":"压力取源部件既可以是取压短节，也可以是外螺纹短节。","options":[],"answer":["正确"]},{"id":1419,"type":"judge","q":"在采用隔离法测量压力的管路中，管路的最高位置应有排液装置。","options":[],"answer":["错误"]},{"id":1420,"type":"judge","q":"热电偶接线柱与热电极接触不良，将导致热电势输出不稳定。","options":[],"answer":["正确"]},{"id":1421,"type":"judge","q":"热电偶具有多种结构形式，它们的结构外形不尽相同，其组成部分也完全不同。","options":[],"answer":["错误"]},{"id":1422,"type":"judge","q":"热电偶温变的传感器引线开路或传感器坏会引起输出毫安值最小。","options":[],"answer":["正确"]},{"id":1423,"type":"judge","q":"流量与对应的被测差压成正比关系。","options":[],"answer":["错误"]},{"id":1424,"type":"judge","q":"流量愈大，靶式流量计靶上所受作用力愈大。","options":[],"answer":["正确"]},{"id":1425,"type":"judge","q":"铝导线的电阻率比铜导线的小。","options":[],"answer":["错误"]},{"id":1426,"type":"judge","q":"膜盒式压力计，弹簧管压力表等指针轴上之所以要装上游丝，其目的是为了消除传动机构之间的间隙，减小仪表的变差。","options":[],"answer":["正确"]},{"id":1427,"type":"judge","q":"普通型热电偶一般由绝缘管、保护套管组成。","options":[],"answer":["错误"]},{"id":1428,"type":"judge","q":"气动压力变送器零点和量程调整是相互影响的，但调零对量程的影响很小．可以忽略不计。","options":[],"answer":["正确"]},{"id":1429,"type":"judge","q":"前后压差小，要求泄漏量小，一般可选用蝶阀。","options":[],"answer":["正确"]},{"id":1430,"type":"judge","q":"热电偶补偿导线使用的环境温度应为200℃以下。","options":[],"answer":["错误"]},{"id":1431,"type":"judge","q":"开关不动的仪表阀门不能硬开关，要用温水或少量蒸汽慢慢加热，防止骤然受热损坏，处理不畅不得启用。","options":[],"answer":["正确"]},{"id":1432,"type":"judge","q":"如发现仪表设备有泄漏，就立即处理，如泄漏严重则在处理的同时，应立即通知生产车间，并向仪表车间汇报。","options":[],"answer":["正确"]},{"id":1433,"type":"judge","q":"进行计量检定用的各种计量标准设备，应按计量检定规程要求配备恒温设施，一般控制在20℃±（0.5～3）℃。","options":[],"answer":["正确"]},{"id":1434,"type":"judge","q":"中小容量的异步电动机通常用热继电器实现过载保护。","options":[],"answer":["正确"]},{"id":1435,"type":"judge","q":"改变电动机的三相电源相序，即可改变电动机的旋转方向。","options":[],"answer":["正确"]},{"id":1436,"type":"judge","q":"改变电动机的三相电源电压大小，即可改变电动机的转速。","options":[],"answer":["错误"]},{"id":1437,"type":"judge","q":"转子流量计是一种非标准流量计，每一台转子流量计有固定的特性，传动部分不能随便互换。","options":[],"answer":["正确"]},{"id":1438,"type":"judge","q":"用弯管器弯制导压管时，一般不采用冷弯，而要用热弯。","options":[],"answer":["错误"]},{"id":1439,"type":"judge","q":"为避免管道振动和最大限度减小流量计的轴向负载，流量计应有牢固的支架支撑。","options":[],"answer":["错误"]},{"id":1440,"type":"judge","q":"压力开关的工作原理是当被测压力超过额定值时，弹性元件的自由端产生位移，直接或经过比较后推动开关元件，改变开关元件的通断状态，达到控制被测压力的目的。","options":[],"answer":["正确"]},{"id":1441,"type":"judge","q":"工程上规定，正常工作时通过热电阻的电流不允许超过6mA 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                    setStatus(`✅ 已导入 ${data.length} 题`);
                } catch (err) {
                    setStatus('❌ 题库解析失败：' + err.message);
                }
            };
            reader.readAsText(file);
        };
        input.click();
    }

    function importFromUrl(url) {
        if (!url) { url = prompt('输入题库 JSON 的直链地址：'); if (!url) return; }
        setStatus('⏳ 远程加载中…');
        GM_xmlhttpRequest({
            method: 'GET',
            url: url,
            onload: (res) => {
                try {
                    const data = JSON.parse(res.responseText);
                    if (!Array.isArray(data)) throw new Error('不是数组');
                    saveBank(data);
                    setStatus(`✅ 已从远程导入 ${data.length} 题`);
                } catch (err) {
                    setStatus('❌ 远程加载失败：' + err.message);
                }
            },
            onerror: () => setStatus('❌ 网络请求失败')
        });
    }

    /* ============================================================
     * 三、题目匹配
     * ============================================================ */
    function norm(s) {
        return String(s || '')
            .replace(/[\s\u00a0\u3000\u200b\u200c\u200d\ufeff～~（）()【】\[\]｛｝{}、，,。;；:：""''“”‘’？?！!·…\-—*~#³㎡]/g, '')
            .toLowerCase();
    }

    // 去掉题干开头的题号与题型前缀，如 "72.[多选题] " → ""
    function stripStemPrefix(s) {
        let t = String(s || '');
        t = t.replace(/^\s*\d+\s*[.、．)）:：\s]+/, '');            // 去题号："72. "
        // 三字题型词优先（避免"判断题"只剥掉"判断"残留"题"字）
        t = t.replace(/^\s*[\[【（(]\s*(单选题|多选题|判断题|不定项选择|单项选择题|多项选择题|填空题|简答题)\s*[\]】）)]\s*/, '');
        t = t.replace(/^\s*(单选题|多选题|判断题|不定项选择|单项选择题|多项选择题|填空题|简答题)\s*/, '');
        t = t.replace(/^\s*[\[【（(]\s*(单选|多选|判断|填空|简答)\s*[\]】）)]\s*/, '');
        t = t.replace(/^\s*(单选|多选|判断|填空|简答)\s*/, '');
        return t;
    }

    // 从题干开头提取题型（单选/多选/判断），用于按题型过滤候选、减少跨题型歧义
    function stemType(qText) {
        const head = String(qText || '').slice(0, 12);
        const m = head.match(/(单选|多选|判断)/);
        if (!m) return '';
        return m[1] === '单选' ? 'single' : m[1] === '多选' ? 'multiple' : 'judge';
    }

    // 编辑距离（允许题干一字之差，如 摆动量/振动量）
    function editDist(a, b) {
        const m = a.length, n = b.length;
        if (!m) return n;
        if (!n) return m;
        let prev = Array.from({ length: n + 1 }, (_, j) => j);
        for (let i = 1; i <= m; i++) {
            const cur = [i];
            for (let j = 1; j <= n; j++) {
                cur[j] = Math.min(prev[j] + 1, cur[j - 1] + 1, prev[j - 1] + (a[i - 1] === b[j - 1] ? 0 : 1));
            }
            prev = cur;
        }
        return prev[n];
    }

    // 多候选去歧义：优先用页面选项文字比对；候选答案相同则任选
    function disambiguate(cands, pageOptsText) {
        if (cands.length > 1) {
            if (pageOptsText) {
                const optNorm = norm(pageOptsText);
                let best = null, bestScore = -1;
                for (const c of cands) {
                    let score = 0;
                    for (const o of (c.options || [])) {
                        const on = norm(o);
                        if (on && optNorm.includes(on)) score += on.length;
                    }
                    if (score > bestScore) { bestScore = score; best = c; }
                }
                if (best && bestScore > 0) return best;
            }
            const ansSet = new Set(cands.map(c => JSON.stringify(c.answer)));
            if (ansSet.size === 1) return cands[0];
            return null;
        }
        return cands.length === 1 ? cands[0] : null;
    }

    function findItem(qText, pageOptsText) {
        const nq = norm(stripStemPrefix(qText));
        if (!nq) return null;
        const ptype = stemType(qText); // 页面题型（可能为空则不过滤）
        const typeOk = it => !ptype || it.type === ptype;
        // 0) 精确匹配（同样按题型过滤：多选页面绝不匹配到同题干单选，避免答错）
        const hit = bank.find(it => typeOk(it) && norm(stripStemPrefix(it.q)) === nq);
        if (hit) return hit;
        // 1) 包含匹配（仅限同题型）
        let cands = bank.filter(it => {
            if (!typeOk(it)) return false;
            const nq2 = norm(stripStemPrefix(it.q));
            if (!nq2) return false;
            const lo = nq.length <= nq2.length ? nq : nq2;
            const hi = nq.length <= nq2.length ? nq2 : nq;
            return hi.includes(lo) && (hi.length - lo.length) <= Math.max(10, lo.length * 0.3);
        });
        // 2) 编辑距离容错（允许一字之差，如 摆动量/振动量；仅限同题型）
        if (!cands.length) {
            const dc = [];
            for (const it of bank) {
                if (!typeOk(it)) continue;
                const nq2 = norm(stripStemPrefix(it.q));
                if (!nq2) continue;
                const lenDiff = Math.abs(nq.length - nq2.length);
                if (lenDiff > Math.max(2, Math.floor(Math.min(nq.length, nq2.length) * 0.15))) continue;
                const d = editDist(nq, nq2);
                const threshold = Math.max(1, Math.floor(Math.min(nq.length, nq2.length) * 0.08));
                if (d <= threshold) dc.push({ it, d });
            }
            if (dc.length) {
                dc.sort((x, y) => x.d - y.d);
                const minD = dc[0].d;
                cands = dc.filter(x => x.d === minD).map(x => x.it);
            }
        }
        return disambiguate(cands, pageOptsText);
    }

    /* ============================================================
     * 四、答题执行
     * ============================================================ */
    let running = false;
    let lastContainer = null;   // 已答过的题目容器，避免重复答同一题
    const AUTO_SUBMIT_KEY = 'lvjian_autosubmit'; // 记住自动提交勾选状态
    let autoSubmitOn = GM_getValue(AUTO_SUBMIT_KEY, CONFIG.autoSubmit ? '1' : '0') === '1'; // 面板可勾选
    const AUTO_RETAKE_KEY = 'lvjian_autoretake'; // 记住自动重考勾选状态
    let autoRetakeOn = GM_getValue(AUTO_RETAKE_KEY, CONFIG.autoRetake ? '1' : '0') === '1';
    const RETAKE_PENDING_KEY = 'lvjian_retake_pending'; // 交卷成功后待重考标记（时间戳）
    let retakeCount = 0;      // 本会话已自动重考场次
    let submitDone = false;     // 是否已提交（防重复）
    let missedCount = 0;        // 本次考试未命中的题数
    let lastNextClickTime = 0;  // 最近一次点"下一题"的时间
    let noContainerNotified = false; // 避免非答题页反复刷状态
    let manualStop = false;    // 用户手动停止后，禁止自动重开（直到手动点「开始答题」或刷新页面）
    let session = 0;           // 会话代次：每次「开始/停止」递增，用于立即中断进行中的等待与点击

    function sleep(ms) { return new Promise(r => setTimeout(r, ms)); }

    function optionText(el) {
        // 0) 整块文本行映射的文字优先（__text 由兜底逻辑写入）
        if (el.__text) return el.__text;
        // 1) 元素自身文字（label / span / td 等）
        let t = el.textContent || '';
        // 2) 自身没文字：取紧跟在后面的元素文字（<input><span>选项文字</span> 结构）
        if (!t.trim()) {
            let cur = el.nextElementSibling;
            let guard = 0;
            while (cur && guard < 3) {
                if (cur.nodeType === 1 && cur.tagName !== 'INPUT' && cur.tagName !== 'BR') {
                    t = cur.textContent || '';
                    if (t.trim()) break;
                }
                cur = cur.nextElementSibling;
                guard++;
            }
        }
        // 3) 取紧挨的文本节点（<input>选项文字 结构）
        if (!t.trim() && el.nextSibling && el.nextSibling.nodeType === 3) {
            t = el.nextSibling.textContent || '';
        }
        // 3.5) 前面的兄弟元素（<span>选项文字</span><input> 结构）
        if (!t.trim()) {
            const pe = el.previousElementSibling;
            if (pe && pe.nodeType === 1 && pe.tagName !== 'INPUT' && pe.tagName !== 'BR') {
                t = pe.textContent || '';
            }
        }
        // 4) 父元素兜底：仅当父元素里只有一个选项控件时采用（避免混入其他选项文字）
        if (!t.trim() && el.parentElement) {
            const inputs = el.parentElement.querySelectorAll('input[type="radio"], input[type="checkbox"]');
            if (inputs.length === 1) {
                const direct = Array.from(el.parentElement.childNodes)
                    .filter(n => n.nodeType === 3)
                    .map(n => n.textContent || '').join('');
                const inner = Array.from(el.parentElement.querySelectorAll('span, font, b, i, u'))
                    .map(n => n.textContent || '').join(' ');
                t = direct + ' ' + inner;
            }
        }
        return norm(t).replace(/^[a-h][、．.．:：)）\s]*/, '');
    }

    // 选项的稳定编号：取 input 的 value 属性（平台打乱显示顺序后，value 仍是原题字母）
    function optionValue(el) {
        const input = el.tagName === 'INPUT'
            ? el
            : (el.querySelector && el.querySelector('input[type="radio"], input[type="checkbox"]'));
        return input ? String(input.value || '').trim().toUpperCase() : '';
    }

    function clickEl(el) {
        if (CONFIG.mode === 'fill') {
            el.value = '1';
            el.dispatchEvent(new Event('input', { bubbles: true }));
            el.dispatchEvent(new Event('change', { bubbles: true }));
            return;
        }
        const input = el.tagName === 'INPUT'
            ? el
            : (el.querySelector && el.querySelector('input[type="radio"], input[type="checkbox"]'));
        if (!input) { el.click(); return; }

        if (el !== input) {
            // 传入的是选项容器（div / label）：优先点内部 span（平台把点击事件绑在文字上）
            const sp = el.querySelector('span');
            (sp || el).click();
        } else {
            // 传入的是 input 本身：优先点旁边的文字元素（平台事件常绑在文字上）
            const sib = input.nextElementSibling;
            if (sib && sib.nodeType === 1 && sib.tagName !== 'INPUT' && sib.tagName !== 'BR') {
                sib.click();
            } else if (input.parentElement && input.parentElement.tagName === 'LABEL') {
                input.parentElement.click();
            } else {
                input.click();
            }
        }
        input.dispatchEvent(new Event('change', { bubbles: true }));
        // 兜底：仍未选中则直接点 input 本身
        if (!input.checked) input.click();
    }

    async function answerOne(container) {
        // 取题干
        let qEl = container;
        if (CONFIG.questionText) {
            qEl = container.querySelector(CONFIG.questionText) || container;
        }

        // 收集选项元素（放在匹配前，供"多候选按选项区分"使用）
        let opts = [];
        if (CONFIG.optionSelector) {
            opts = Array.from(container.querySelectorAll(CONFIG.optionSelector));
        }
        if (!opts.length) {
            opts = Array.from(container.querySelectorAll('label, li, div[class*="option"], input[type="radio"], input[type="checkbox"]'));
        }
        if (!opts.length) { setStatus('⚠️ 未找到选项元素'); return false; }

        // 去重：label 与其内部的 input 只保留一个（保留 label）
        opts = opts.filter((el) => {
            if (el.tagName === 'INPUT') {
                const lb = el.closest('label');
                return !(lb && opts.includes(lb));
            }
            return true;
        });

        // 兜底：所有选项元素都读不到文字时，用"选项区整块文本按行切分"映射文字
        opts.forEach(o => { delete o.__text; });
        const allEmpty = opts.every(o => !optionText(o));
        if (allEmpty) {
            const row = container.querySelector('tr:last-child td');
            if (row) {
                const lines = (row.innerText || row.textContent || '').split('\n').map(s => s.trim()).filter(Boolean);
                const inputs = opts.filter(o => o.tagName === 'INPUT');
                if (inputs.length && inputs.length === lines.length) {
                    inputs.forEach((o, i) => {
                        o.__text = norm(lines[i]).replace(/^[a-h][、．.．:：)）\s]*/, '');
                    });
                }
            }
        }

        // 匹配题目（带上页面选项文字，用于区分题干重复的多候选）
        const pageOptsText = opts.map(o => optionText(o)).join(' ');
        const item = findItem(qEl.textContent, pageOptsText);
        if (!item) {
            missedCount++;
            logFail(qEl.textContent, '未命中题库');
            const snippet = String(qEl.textContent || '').trim().slice(0, 30);
            setStatus(`❌ 未命中题库，跳过此题｜题干开头：${snippet}`);
            return false;
        }

        if (item.type === 'judge') {
            const isTrue = item.answer[0] === '正确';
            const targetTexts = isTrue ? CONFIG.judgeTrue : CONFIG.judgeFalse;
            let target = opts.find(o => targetTexts.some(t => optionText(o).includes(t)));
            if (!target && opts.length >= 2) {
                // 兜底：选项文字读不到时按位置点（页面惯例：第一个=正确，第二个=错误）
                target = opts[isTrue ? 0 : 1];
                if (target) setStatus(`✔ 判断题已答（按位置兜底）：${item.answer[0]}`);
            }
            if (target) {
                clickEl(target);
                setStatus(`✔ 判断题已答：${item.answer[0]}`);
                return true;
            }
            logFail(qEl.textContent, '未找到判断题答案按钮');
            setStatus('⚠️ 未找到判断题答案按钮'); return false;
        }

        // 兜底：个别旧题库选项被挤成一行（"A、xx b、xx c、xx d、xx"）时，按字母前缀切分
        if (item.options.length < 2) {
            const parts = String(item.options[0] || '').split(/(?=[A-Ha-h][、．.．:：])/)
                .map(s => s.replace(/^[A-Ha-h][、．.．:：]\s*/, '').trim()).filter(Boolean);
            if (parts.length >= 2) item.options = parts;
        }

        const letters = 'ABCDEFGH';
        let clicked = 0, byPos = 0;
        const usedValue = [];
        for (const letter of item.answer) {
            const idx = letters.indexOf(letter);
            if (idx < 0 || idx >= item.options.length) continue;
            const want = norm(item.options[idx]); // 题库里该答案字母对应的选项文字
            let target;
            // 1) 按 value（选项稳定编号 = 原题字母）匹配——应对平台随机打乱选项顺序
            target = opts.find(o => optionValue(o) === letter);
            if (target) usedValue.push(letter);
            // 2) 按选项文字精确 / 模糊匹配
            if (!target) {
                target = opts.find(o => optionText(o) === want);
                if (!target && want) {
                    target = opts.find(o => {
                        const ot = optionText(o);
                        return ot && ((ot.includes(want) && want.length >= 2) || (want.includes(ot) && ot.length >= 2));
                    });
                }
            }
            // 3) 最后兜底：按字母位置
            if (!target && idx < opts.length) { target = opts[idx]; byPos++; }
            if (target) { clickEl(target); clicked++; }
        }
        if (clicked === item.answer.length) {
            const how = byPos ? '含位置兜底' : (usedValue.length === item.answer.length ? '按选项编号value匹配' : '按文字匹配');
            setStatus(`✔ 题#${item.id} ${item.type === 'multiple' ? '多选' : '单选'}已答：${item.answer.join('')}｜${how}`);
            return true;
        }
        logFail(qEl.textContent, '选项数量与答案不匹配');
        setStatus('⚠️ 选项数量与答案不匹配，请检查选择器'); return false;
    }

    // 模拟完整鼠标事件序列（lui 组件按钮需要 mousedown/mouseup 才响应）
    function dispatchFullClick(el) {
        const opts = { bubbles: true, cancelable: true, view: window };
        try {
            el.dispatchEvent(new MouseEvent('mousedown', opts));
            el.dispatchEvent(new MouseEvent('mouseup', opts));
        } catch (e) { /* 老浏览器忽略 */ }
        el.click();
    }

    // lui 按钮：从文字叶子向上找真正的可点击容器（外层带 lui_widget_btn/tabindex/按钮id），找不到就点叶子
    function luiBox(leaf, idRe) {
        let cur = leaf;
        for (let i = 0; i < 6 && cur; i++) {
            const cls = cur.className ? String(cur.className) : '';
            const id = cur.id || '';
            if (/lui_widget_btn/i.test(cls) || cur.hasAttribute('tabindex') ||
                /^button$/i.test(cur.tagName) || (idRe && idRe.test(id))) return cur;
            cur = cur.parentElement;
        }
        return leaf;
    }

    // 自动点"下一题"：只认文字为"下一题"的按钮，绝不碰"提交试卷"
    function clickNext() {
        // 1) 用户指定了选择器
        if (CONFIG.nextButton) {
            const b = document.querySelector(CONFIG.nextButton);
            if (b) { dispatchFullClick(b); return true; }
        }
        // 2) 在按钮区（lui_exam_btn_node）内找文字为"下一题"的最内层元素
        const zone = document.querySelector('.lui_exam_btn_node') || document;
        const txtEl = Array.from(zone.querySelectorAll('div, span, button, a, input')).find(b =>
            (b.innerText || b.value || '').trim() === '下一题' && b.children.length === 0);
        if (txtEl) {
            // 向上找真正的按钮容器（title=下一题 / tabindex / lui_widget_btn / topic_next）
            let cur = txtEl;
            for (let i = 0; i < 6 && cur; i++) {
                if (cur.getAttribute && (
                    cur.getAttribute('title') === '下一题' ||
                    cur.hasAttribute('tabindex') ||
                    (cur.className && /lui_widget_btn|topic_next/i.test(String(cur.className)))
                )) {
                    dispatchFullClick(cur);
                    return true;
                }
                cur = cur.parentElement;
            }
            dispatchFullClick(txtEl); // 兜底：点文字元素本身（事件冒泡到按钮）
            return true;
        }
        // 3) 全局按精确文字"下一题"找可见元素（排除提交/查看答案等）
        const all = Array.from(document.querySelectorAll('div, span, button, a, input'));
        const t2 = all.find(b => {
            const txt = (b.innerText || b.value || '').trim();
            if (txt !== '下一题' || b.children.length !== 0) return false;
            return b.offsetParent !== null; // 只点可见的
        });
        if (t2) { dispatchFullClick(t2); return true; }
        return false;
    }

    // 自动提交（带安全保护）：有未命中的题则取消提交
    async function trySubmit() {
        if (submitDone) return;
        if (missedCount > 0) {
            setStatus(`⚠️ 本次有 ${missedCount} 题未命中，已取消自动提交，请检查后手动交卷`);
            return;
        }
        submitDone = true; // 防重复提交
        setStatus('⏳ 已答完，尝试自动提交…');
        const s = session; // 提交过程中被「停止」则中断
        await sleep(800);
        if (s !== session) return; // 停止：不再点提交
        const texts = CONFIG.submitButtonTexts;
        const isSubmitLeaf = b => b.offsetParent !== null && !b.children.length &&
            texts.includes((b.innerText || b.value || '').trim());
        // 1) 先在按钮区、再全局找"提交试卷"文字叶子
        const zone = document.querySelector('.lui_exam_btn_node') || document;
        let leaf = Array.from(zone.querySelectorAll('div, span, button, a, input')).find(isSubmitLeaf);
        if (!leaf) leaf = Array.from(document.querySelectorAll('div, span, button, a, input')).find(isSubmitLeaf);
        let btn = null;
        if (leaf) {
            // 2) 向上找 lui 按钮外层容器再点（同"下一题"的坑）
            btn = luiBox(leaf, /topic_sure|submit|sure/i);
        } else {
            // 3) 兜底：直接按 title 属性找外层按钮（lui 按钮外层常带 title="提交试卷"）
            btn = Array.from(document.querySelectorAll('div, span, button, a, input')).find(b =>
                b.offsetParent !== null && texts.includes(((b.getAttribute && b.getAttribute('title')) || '').trim())) || null;
        }
        if (btn) {
            dispatchFullClick(btn);
            setStatus('✅ 已点击提交试卷，等待确认弹窗…');
            // 4) 自动确认弹窗（确定/确认/是/OK）——同样要点 lui 外层容器
            await sleep(800);
            if (s !== session) return; // 停止：不再点确认框
            const okLeaf = Array.from(document.querySelectorAll('button, a, div, span')).find(b => {
                const txt = (b.innerText || '').trim();
                return b.offsetParent !== null && !b.children.length && ['确定', '确认', '是', 'OK', 'ok'].includes(txt);
            });
            if (okLeaf) {
                dispatchFullClick(luiBox(okLeaf, /sure|confirm|ok/i));
                setStatus('✅ 已确认提交，交卷完成');
                if (autoRetakeOn) {
                    GM_setValue(RETAKE_PENDING_KEY, String(Date.now())); // 标记待自动重考
                    setStatus('✅ 已确认提交，交卷完成｜🔄 将自动重新考试');
                }
            } else {
                setStatus('✅ 已点击提交，如弹确认框请手动点确定');
            }
        } else {
            submitDone = false;
            setStatus('⚠️ 未找到「提交试卷」按钮，请手动交卷');
        }
    }

    async function runOnce() {
        if (!bank.length) { setStatus('请先导入题库'); return; }
        const s = session; // 记录本回合代次：期间被「停止」则立即中断
        const containers = Array.from(document.querySelectorAll(CONFIG.questionContainer));
        if (!containers.length) {
            if (!noContainerNotified) { setStatus('⚠️ 未找到题目容器，请确认在答题页面'); noContainerNotified = true; }
            return;
        }
        noContainerNotified = false;
        const target = containers[containers.length - 1]; // 一页一题：取当前可见的题
        if (target === lastContainer) {
            // 已答过当前题：若点过"下一题"但一直没切题（说明是最后一题）→ 尝试自动提交
            if (autoSubmitOn && !submitDone && lastNextClickTime > 0 && Date.now() - lastNextClickTime > 2500) {
                await trySubmit();
            }
            return;
        }
        lastContainer = target;
        const ok = await answerOne(target);
        if (CONFIG.autoNext) {
            await sleep(CONFIG.nextDelay); // 等平台先记录答案
            if (s !== session) return; // 停止：不再点「下一题」
            const nc = clickNext();
            lastNextClickTime = Date.now();
            if (nc) {
                if (ok) setStatus('➡ 已自动点击下一题');
            } else {
                if (ok) setStatus('⚠️ 未找到「下一题」按钮（可能已是最后一题）');
                if (autoSubmitOn && ok) await trySubmit();
            }
        }
    }

    async function runLoop() {
        if (!bank.length) { setStatus('请先导入题库'); return; }
        if (running) return;
        const mySession = session; // 本会话代次：被「停止」递增后立即退出
        running = true;
        setStatus('▶ 开始自动答题…');
        while (running && mySession === session) {
            try { await runOnce(); } catch (e) { console.error(e); }
            await sleep(CONFIG.minDelay + Math.random() * (CONFIG.maxDelay - CONFIG.minDelay));
        }
    }

    function stop() {
        session++; // 中断正在进行的等待与点击动作（硬停）
        running = false;
        manualStop = true; // 停止后不再被"自动开跑"监测顶掉，需手动点「开始答题」才恢复
        if (observer) { observer.disconnect(); observer = null; } // 立即停掉页面监听，防止再触发
        setStatus('⏹ 已停止（自动开跑已暂停，需点「开始答题」恢复）');
    }

    /* ============================================================
     * 五、监听下一题（一页一题平台自动续答）
     * ============================================================ */
    let observer = null;
    function startWatch() {
        // 稳定节奏：答题完全由 runLoop 每固定间隔轮询完成，
        // 不再由页面变化抢答（页面变化抢答会打乱节奏、并与主循环并发导致漏答/误答）。
        if (!CONFIG.watchNext || observer) return;
        const root = document.querySelector('#topicExam') || document.body;
        observer = new MutationObserver(debounce(() => {
            /* 占位：不在此答题，节奏统一由 runLoop 控制 */
        }, 400));
        observer.observe(root, { childList: true, subtree: true });
    }

    function debounce(fn, ms) {
        let t;
        return () => { clearTimeout(t); t = setTimeout(fn, ms); };
    }

    /* ============================================================
     * 六、浮动控制面板
     * ============================================================ */
    let statusEl;
    function setStatus(txt) {
        if (statusEl) statusEl.textContent = txt;
        console.log('[自动答题]', txt);
    }

    // 答题失败记录：写入面板「未命中明细」+ 控制台，方便排查
    function logFail(rawText, reason) {
        const raw = String(rawText || '').trim();
        console.log('[自动答题][' + reason + ']', JSON.stringify(raw));
        try {
            const box = document.getElementById('dbb-missed-list');
            if (box) {
                const div = document.createElement('div');
                div.textContent = '【' + reason + '】' + raw;
                box.appendChild(div);
            }
        } catch (e) { /* 面板未建好时忽略 */ }
    }

    function buildPanel() {
        const panel = document.createElement('div');
        panel.style.cssText = 'position:fixed;top:12px;right:12px;z-index:999999;background:#fff;border:1px solid #ddd;border-radius:8px;padding:10px 12px;font:13px/1.6 sans-serif;box-shadow:0 2px 12px rgba(0,0,0,.15);max-width:280px;';
        panel.innerHTML = `
            <div style="font-weight:bold;margin-bottom:6px;">🧪 自动答题 v1.5.14（分享版）</div>
            <div style="display:flex;gap:6px;flex-wrap:wrap;margin-bottom:6px;">
                <button data-act="import" style="cursor:pointer;">导入题库</button>
                <button data-act="url" style="cursor:pointer;">远程加载</button>
                <button data-act="run" style="cursor:pointer;background:#2f7;border:1px solid #2a6;border-radius:4px;padding:2px 8px;">开始答题</button>
                <button data-act="stop" style="cursor:pointer;">停止</button>
            </div>
            <label style="display:flex;align-items:center;gap:4px;margin-bottom:6px;cursor:pointer;color:#444;">
                <input type="checkbox" data-act="autosubmit" style="vertical-align:middle;"> 自动提交（答完最后一题后）
            </label>
            <label style="display:flex;align-items:center;gap:4px;margin-bottom:6px;cursor:pointer;color:#444;">
                <input type="checkbox" data-act="autoretake" style="vertical-align:middle;"> 自动重考（交卷后自动开始下一场）
            </label>
            <div id="dbb-status" style="color:#666;word-break:break-all;"></div>
            <details id="dbb-missed" style="margin-top:6px;font-size:12px;color:#a33;">
                <summary style="cursor:pointer;">未命中明细（点开看）</summary>
                <div id="dbb-missed-list" style="max-height:160px;overflow:auto;word-break:break-all;margin-top:4px;line-height:1.5;"></div>
            </details>`;
        panel.querySelector('[data-act=import]').onclick = importFromFile;
        panel.querySelector('[data-act=url]').onclick = () => importFromUrl();
        panel.querySelector('[data-act=run]').onclick = () => {
            session++; // 新会话
            manualStop = false; // 用户手动开始后恢复自动能力
            lastContainer = null; // 从头开始/重新答当前题
            lastNextClickTime = 0;
            submitDone = false; // 重置提交/未命中状态，重新开始算新的一场
            missedCount = 0;
            startWatch();
            runLoop();
        };
        panel.querySelector('[data-act=stop]').onclick = stop;
        const autoChk = panel.querySelector('[data-act=autosubmit]');
        autoChk.checked = autoSubmitOn;
        autoChk.onchange = () => {
            autoSubmitOn = autoChk.checked;
            GM_setValue(AUTO_SUBMIT_KEY, autoSubmitOn ? '1' : '0'); // 记住勾选状态
            setStatus(autoSubmitOn ? '🟢 自动提交已开启（最后一题自动交卷）' : '自动提交已关闭');
        };
        const retakeChk = panel.querySelector('[data-act=autoretake]');
        retakeChk.checked = autoRetakeOn;
        retakeChk.onchange = () => {
            autoRetakeOn = retakeChk.checked;
            GM_setValue(AUTO_RETAKE_KEY, autoRetakeOn ? '1' : '0'); // 记住勾选状态
            if (!autoRetakeOn) GM_setValue(RETAKE_PENDING_KEY, ''); // 关闭时撤销待重考
            setStatus(autoRetakeOn ? '🟢 自动重考已开启（交卷后自动开始下一场）' : '自动重考已关闭');
        };
        statusEl = panel.querySelector('#dbb-status');
        document.body.appendChild(panel);
        loadBank();
        setStatus(bank.length ? `题库就绪：${bank.length} 题` : '未导入题库');
        autoStartIfExam();
    }

    /* ============================================================
     * 七、进入试卷页自动开跑 + 交卷后自动重考
     * ============================================================ */
    // 找"重新考试"按钮（文字叶子 → lui 外层容器）
    function findRetakeBtn() {
        const texts = CONFIG.retakeButtonTexts || ['重新考试'];
        const leaf = Array.from(document.querySelectorAll('div, span, button, a, input')).find(b =>
            b.offsetParent !== null && !b.children.length && texts.includes((b.innerText || '').trim()));
        return leaf ? luiBox(leaf, /retake|sure|restart|exam/i) : null;
    }

    function autoStartIfExam() {
        // 持续监测：初次进入答题页、或点击"重新考试"再次进入答题页，都自动开跑。
        // 用户手动点过「停止」后（manualStop=true），监测不再自动开跑，需手动点「开始答题」恢复。
        let lastHad = false;
        const tryStart = () => {
            if (manualStop) return; // 用户已手动停止：不再自动重考、不再自动开跑
            // ① 自动重考：上一场交卷成功后，检测到结果页"重新考试"按钮就点它
            if (autoRetakeOn && !document.querySelector(CONFIG.questionContainer)) {
                const ts = GM_getValue(RETAKE_PENDING_KEY, '');
                if (ts) {
                    if (Date.now() - Number(ts) > 5 * 60 * 1000) {
                        GM_setValue(RETAKE_PENDING_KEY, ''); // 超过 5 分钟未触发，作废
                    } else if (CONFIG.retakeMax && retakeCount >= CONFIG.retakeMax) {
                        GM_setValue(RETAKE_PENDING_KEY, '');
                        setStatus(`⏹ 自动重考已达上限（${CONFIG.retakeMax} 场），已停止`);
                    } else {
                        const btn = findRetakeBtn();
                        if (btn) {
                            GM_setValue(RETAKE_PENDING_KEY, '');
                            retakeCount++;
                            setStatus(`🔄 自动重考第 ${retakeCount} 场…`);
                            dispatchFullClick(btn);
                            // 可能弹"确定重新考试"确认框
                            setTimeout(() => {
                                const okLeaf = Array.from(document.querySelectorAll('button, a, div, span')).find(b => {
                                    const txt = (b.innerText || '').trim();
                                    return b.offsetParent !== null && !b.children.length && ['确定', '确认', '是', 'OK', 'ok'].includes(txt);
                                });
                                if (okLeaf) dispatchFullClick(luiBox(okLeaf, /sure|confirm|ok/i));
                            }, 800);
                        }
                    }
                }
            }
            // ② 检测到答题页（首次进入或重新进入）→ 重置会话并开跑
            const has = !!document.querySelector(CONFIG.questionContainer);
            if (has && !lastHad) {
                if (GM_getValue(RETAKE_PENDING_KEY, '')) GM_setValue(RETAKE_PENDING_KEY, ''); // 已在答题页，撤销待重考
                submitDone = false;
                missedCount = 0;
                lastContainer = null;
                lastNextClickTime = 0;
                setStatus('▶ 检测到试卷，自动开始答题…');
                if (running) { runOnce(); }       // 已在跑：直接答当前题
                else { startWatch(); runLoop(); } // 未在跑：挂监听并开跑
            }
            lastHad = has;
        };
        tryStart(); // 页面直接就是答题页的情况
        setInterval(tryStart, 1000); // 之后每 1 秒检查一次（覆盖"重新考试"等页面内跳转）
    }

    if (document.body) buildPanel();
    else window.addEventListener('DOMContentLoaded', buildPanel);
})();