2022年下半年电焊工高级二氧化碳气保焊接试题 .pdf

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1、辽宁省 20XX 年下半年电焊工高级二氧化碳气保焊接试题一、单项选择题（共25 题，每题2 分，每题的备选项中，只有1 个事最符合题意）1、_不是埋弧焊最主要的焊接参数。A焊接电流B电弧电压C焊丝熔化速度D焊接速度2、珠光体耐热钢是以铬钼为基础的具有高温强度和抗氧化性的_。A优质碳素结构钢B高合金钢C中合金钢D低合金钢3、CO2 气体保护焊有许多优点，但_不是 CO2 气体保护焊的优点。A生产率高，成本低B焊缝含氢量少，抗裂性能和力学性能好C焊接变形和应力小D设备简单，容易维护修理4、焊接接头夏比冲击试样的缺口按试验要求不能开在_上。A焊缝B熔合线C热影响区D母材5、黄铜气焊时，使用弱氧化焰，

2、以使焊缝表面生成一层_薄膜，阻挡锌的蒸发。A氧化硅B氧化锌C氧化铜D氧化铝6、焊接钛及钛合金最容易出现的焊接缺陷是_。A夹渣和热裂纹B未熔合和未焊透C烧穿和塌陷D气孔和冷裂纹7、对坡口较大、焊件受力大的灰铸铁电弧冷焊时，不能采用_的焊接工艺方法A多层焊B裁螺钉焊法C合理安排焊接次序D焊缝高出母材一块8、中厚板对接仰焊位置半自动CO2 气体保护焊应采用 _。A左焊法B右焊法C立向下焊D立向上焊9、自由电弧一般经过三种“压缩效应”成为等离子弧，但_不是这三种压缩效应中的一种。A机械压缩效应B热收缩效应C磁收缩效应D化学压缩效应10、_的接头不属于异种金属焊接接头。A钢与铜B低碳钢上堆焊奥氏体不锈钢

3、C奥氏体不锈钢复合板DQ235 钢板上用 H08 焊丝堆焊11、国际焊接学会推荐的碳当量计算公式适用于_。A高合金钢B奥氏体不锈钢C耐磨钢D碳钢和低合金结构钢12、钢淬火的目的是为了细化晶粒，提高钢的_。A塑性B综合力学性能C韧性D硬度和耐磨性13、低合金强度用钢按热处理状态分类，30CrMnSiA 钢属于 _。A正火钢B热轧钢C非热处理强化钢D中碳调质钢14、由于球化剂具有阻碍石墨化作用，因此球墨铸铁产生白口铸铁组织的倾向_。A与灰铸铁相同B比灰铸铁小C比灰铸铁小得多D比灰铸铁大15、焊缝和热影响区性能最坏的焊接方法是_。A气焊B焊条电弧焊C埋弧自动焊D手工钨极氩弧焊16、我国窄间隙埋弧焊焊

4、接钢板最大厚度可达_mm。A250 B300 C350 D400 17、原子是由居于中心的带正电的原子核和核外带负电的电子组成，原子呈_。文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI

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9、1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K

10、7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2A弱电性B带负电C带正电D中性18、在特殊环境下工作的结构，应选用能保证_与母材相近或相近似的焊条。A熔敷金属的抗拉强度B熔敷金属的冲击韧性C熔敷金属的化学成分D熔敷金属的性能19、当填充金属材料一定时，_的大小决定了焊缝

11、的化学成分。A熔宽B余高C熔深D焊脚20、_不是为了解决珠光体钢和奥氏体不锈钢焊接接头中的碳迁移问题，而采取的措施。A焊后焊接接头尽量不热处理B尽量缩短焊件高温停留时问C提高奥氏体填充材料中的含镍量D降低焊件的工作温度21、焊接电源适应焊接电弧变化的特性叫做_。A电弧的静特性B电源的外特性C电源的动特性D电源的调节特性22、职业道德内容很丰富，但却不包括_。A职业道德守则B职业道德培养C职业道德品质D职业道德效益23、用于照料工作地，以保持工作地处于正常工作状态所需要的时间是_。A基本时间B辅助时间C布置工作地时间D准备、结束时间24、企业信誉的基础是 _。A效低的价格B较高的产量C良好的产品

12、质量和服务D较多的社会关系25、弯曲试验的目的是测定焊接接头的_。A强度B硬度C韧性文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 H

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18、J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2D塑性二、多项选择题（共25 题，每题2 分，每题的备选项中，有2 个或 2 个以上符合题意，至少有 1 个错项。错选，本题不得分；少选，所选的每个选项得0.5 分）1、氧在钢焊缝金属中的存在形式主要是（）。 A溶解在焊缝金属中BSiO2 夹杂物CCr2O3夹杂物D

19、FeO夹杂物2、_适合于焊接铝及铝合金的薄板、全位置焊接。A熔化极氩弧焊BCO2 气体保护焊C焊条电弧焊D钨极脉冲氩弧焊3、中厚板以上的金属材料用等离子弧切割时，均采用_等离子弧。A直接型B转移型C非转移型D联合型4、解决珠光体钢和奥氏体不锈钢接头中的碳迁移问题而采取的措施之一是用_预先在珠光体钢坡口面上堆焊过渡层。A高镍基焊条B高钒基焊条C高铬基焊条D高锰基焊条5、零件工作时所承受的应力大于材料的屈服点时，将会发生_。A断裂B塑性变形C弹性变形6、采用砂轮打磨铝及铝合金表面的氧化膜时，因为_，焊接时会产生缺陷。A不能彻底清除氧化膜B坡口表面过于光滑C坡口表面过于粗糙D沙粒留在金属表面7、_不

20、是气割机进行切割的优点。A适合切割大厚度钢板B适合切割需要预热的中、高碳钢C气割速度和精度高D操作灵活方便、成本低8、低碳钢焊接接头中力学性能最差的是_。A焊缝区B母材C部分相变区D熔合区和过热区文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档

21、编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5

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23、编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5

24、N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档

25、编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5

26、N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J29、构件厚度方向和长度方向不在一个平面上的变形是_。A角变形B波浪变形C扭曲变形D错边变形10、牌号为 HSCuZn-1 的焊丝是 _。A纯铜焊B黄铜焊丝C青铜焊丝

27、D白铜焊丝11、粗丝 CO2 气体保护焊中，熔滴过渡往往是以_的形式出现。A喷射过渡B射流过渡C短路过渡D粗滴过渡12、在焊缝横截面中，从焊缝正面到焊缝背面的距离叫_。A焊缝熔深B焊缝余高C焊缝计算厚度D焊缝厚度13、企业信誉的基础是 _。A较低的价格B较高的产量C良好的产品质量和服务D较多的社会关系14、用于铜及铜合金气焊的助熔剂是_。AHJ260 BCJ301 CCJ401 DHJ431 15、锅炉和压力容器与一般机械设备所不同的特点是工作条件恶劣、容易发生事故和_。A对工作环境要求高B操作复杂、要求高C可以随时停止运转检修D使用广泛并要求连续运行16、为扩大交流电压表量程，应配用_。A电

28、流分流器B电压分流器C电流互感器D电压互感器17、_可以反映出焊接接头各区域的塑性差别。A冷弯试验B拉伸试验文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:C

29、O7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4

30、B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:C

31、O7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4

32、B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:C

33、O7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4

34、B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2C冲击试验D硬度试验18、低合金耐热钢焊条选择原则，不正确的是_。A等性能B接头组织的稳定性C化学性能的均一性D接头抗裂性19、决定等离子弧功率的两个参数是_。A输入电流和工作电压B切割电流和空载电压C切割电流和输入电压D切割电流和工作电压20、_不属

35、于闪光对焊的焊接参数。A闪光电流B闪光留量C顶锻压力D焊件厚度21、在焊剂牌号中，汉语拼音字母为_表示烧结焊剂。A“E”B“F”C“SJ”D“HJ”22、使用等压式割炬时，应保证乙炔有一定的_。A流量B纯度C干燥度D工作压力23、手工钨极氩弧焊设备中没有_。A控制系统B行走机构C气路系统D水路系统24、目前穿透型等离子弧焊焊接镍基合金常选用（）作为保护气体。 A纯氩或氩中加少量氢的混合气体B纯氩或氩氦混合气体C氮气D氩加 CO2 混合气体25、_属于埋弧焊焊机小车性能的检测内容。A各控制按钮的动作B引弧操作性能C焊丝送进速度D驱动电动机和减速系统的运行状态文档编码:CO7X5K7H6

36、Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4

37、U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6

38、Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4

39、U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6

40、Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4

41、U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2文档编码:CO7X5K7H6Z7 HV7P5N7N4B3 ZI1X4U3R7J2