[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fb7oEfbHSiNHjZJThR4TP0fy6aAfVn2gM8RCKzEYtIxQ":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":14,"related":15,"source":26,"type":41},[],"2026-05-22 15:36:26",1118919548,[8,9],"对","错",{"courseId":11,"workId":12,"workName":13},"1000159736","66984479","第二章单元测试","在新能源汽车的低压上电过程中,信号交互的时序必须严格按照钥匙信号先发出、控制器指令随后发出、反馈信号最后传递的顺序进行,否则将导致整个上电流程失败",[16,28,38,42,47,56,65,70,80,89],{"answer":17,"createTime":5,"id":18,"options":19,"question":25,"source":26,"type":27},[],1118919544,[20,21,22,23,24],"低压上电是指将12V电源从OFF状态切换到ON或READY状态,为各控制单元提供初始电能","低压上电成功后,高压系统一定会立即启动","低压上电的主要作用是为仪表、灯光、娱乐系统等低压电器提供电能","低压上电是高压上电和车辆启动的基础","低压上电位于整车上下电架构的后端,在高压上电完成后进行","关于新能源汽车低压上电策略,下列哪些描述是正确的","v2",1,{"answer":29,"createTime":5,"id":30,"options":31,"question":36,"source":26,"type":37},[],1118919546,[32,33,34,35],"按下启动按钮后仪表盘无反应","车辆进入READY状态但无法行驶","间歇性出现上电失败","部分指示灯点亮但无法完成上电","新能源汽车低压不上电的典型故障现象通常不包括以下哪种情况",0,{"answer":39,"createTime":5,"id":6,"options":40,"question":14,"source":26,"type":41},[],[8,9],3,{"answer":43,"createTime":5,"id":44,"options":45,"question":46,"source":26,"type":41},[],1118919550,[8,9],"高压互锁机制通过检测高压连接器的状态变化来防止高压系统在连接器未完全接合时上电,其保护作用仅限于防止维修时的误操作触电",{"answer":48,"createTime":5,"id":49,"options":50,"question":55,"source":26,"type":37},[],1118919552,[51,52,53,54],"高压采集板","从控模块","BMU电池管理单元","温度传感器","BMS电池管理系统的三层控制架构中,主要负责整车层面协调控制的是哪一层",{"answer":57,"createTime":5,"id":58,"options":59,"question":64,"source":26,"type":37},[],1118919556,[60,61,62,63],"keyless-ECU内部电源模块损坏","BCM的CAN总线终端电阻开路","CAN-H线路对地短路","CAN-L线路与电源正极短路","比亚迪秦EV出现无钥匙进入失效和无法启动故障,解码器显示故障码U021487.若通过示波器测量发现CAN-H波形为持续低电平,CAN-L波形相对正常,以下哪项是最可能的原因",{"answer":66,"createTime":5,"id":67,"options":68,"question":69,"source":26,"type":41},[],1118919558,[8,9],"在新能源汽车中,低压不上电故障的典型表现包括无法解锁、仪表异常显示以及无法上高压电",{"answer":71,"createTime":5,"id":72,"options":73,"question":79,"source":26,"type":27},[],1118919560,[74,75,76,77,78],"BMU电池管理单元负责整车层面的协调控制,与VCU、充电机进行通信","从控模块负责单体电池的电压、温度采集,执行电池均衡功能","高压采集板采集高压部件的电压和电流,监控整个电池包的状态","BMS的三层架构中,BMU电池管理单元属于第二层控制架构","高压采集板不参与高压互锁检测","关于BMS电池管理系统的三层控制架构,以下哪些说法是正确的",{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":26,"type":37},[],1118919562,[84,85,86,87],"关键部件如接触器采用双路并联设计,一路失效时另一路仍能正常工作","检测到单个传感器失效时,系统通过其他数据补偿并保持基本行驶能力","驾驶员按下启动按钮后,系统立即闭合主正接触器进行高压上电","严重故障时,多个控制器独立触发保护机制执行紧急下电","在设计新能源汽车高压上下电策略时,以下哪项最不符合安全第一的设计原则",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":26,"type":37},[],1118919573,[93,94,95,96],"配电箱被烧毁,经济损失超过3万元","生产线被迫停产6小时,间接损失达20余万元","电工手部严重灼伤,住院治疗28天","电工被吊销特种作业操作证","某电工在更换故障插座时未执行断电操作,导致触电事故.以下哪项是该事故最直接的后果"]