【判断题】
CRH2A统型动车组检查空气弹簧支撑与底座间（转向架构架侧梁空气弹簧安装座上部）有无加装调整板
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CRH2A统型动车组浪涌保护装置检查，使用万用表欧姆档对保险管两端测量，确定阻值500Ω
【判断题】
CRH2A统型动车组在受电弓没有降下或保护接地开关EGS没有闭合的情况下，高压机器箱不能打开
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CRH2A统型动车组EGS的作用是将高压系统强制性接地，以便车辆维护时人员的安全
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CRH2A统型动车组头车车钩中心高度由于车钩整体超差，可通过空气弹簧进行调整
【判断题】
CRH2A统型动车组车内通风用排气装置的结构为设置于客室座席底座部、司机室、出入通道及厕所的排气口与底板下的排气通道不相通
【判断题】
CRH2A统型动车组受电弓绝缘检测：用500Ｖ兆欧表测量受电弓框架和大地（EGS盘）之间阻值在25ＭΩ以上
【判断题】
CRH2A统型动车组受电弓专项检查时,检查弓角无裂纹，表面磨损纵向宽度大于3mm时更换
【判断题】
CRH2A统型动车组受电弓绝缘测量，用兆欧表进行校验：将兆欧表正负极两线短接，手动操作摇表，速度约为10转/秒，确认摇表指针回零位
【判断题】
隔离开关检查，使用游标卡尺测量闸刀磨合处厚度，在自由状态下两弹簧片间的距离≤9mm，闸刀接触部分厚度≥7.5mm
【判断题】
CRH2A统型动车组在高压隔离开关带闸刀侧绝缘子在分闸条件下，其顶部晃动量不允许超过1mm
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