[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fuDGwhBPLv8l6mFv2EFtnbo0fkX6zIhCaJYEsisEzI3w":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":11,"question":18,"related":19,"source":28,"type":29},[],"2023-06-06 17:54:00",49524922,[8,9,10],"TN-S","TN-C-S","TN-C",{"count":12,"courseId":13,"courseImg":14,"courseName":15,"workId":16,"workName":17},36,"f471876d71b6eb92ab81a0cff77243f0","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F619165b2184a92b252b471d3400449c0.png","药学综合实训(2)","523d615a84d1469186124c6a053c2692","电气类安全测试题","保护接零系统中,一部分采用中性线与保护先合一,局部采用专设保护线.该系统是( )",[20,30,38,46,51,56,64,69,74,77],{"answer":21,"createTime":5,"id":22,"options":23,"question":27,"source":28,"type":29},[],49524914,[24,25,26],"IT","TN","TT","( )表示中性点接地系统中,将电气设备外壳,通过与系统接地无关的接地极直接接地","v1",0,{"answer":31,"createTime":5,"id":32,"options":33,"question":37,"source":28,"type":29},[],49524915,[34,35,36],"电流动作型","电压动作型","交流脉冲型","( )检查特性较好,既可作全系统的总保护,也可作各干线、支线的分级保护",{"answer":39,"createTime":5,"id":40,"options":41,"question":45,"source":28,"type":29},[],49524916,[42,43,44],"电压型","脉冲型","电流型","( )漏电保护器应用场景如下:电动机外壳漏电,外壳对地电压上升到危险数值时,漏电脱扣器迅速动作切断供电电路",{"answer":47,"createTime":5,"id":48,"options":49,"question":50,"source":28,"type":29},[],49524917,[8,9,10],"( )系统用于有爆炸危险、火灾危险性较大或安全要求较高的场所",{"answer":52,"createTime":5,"id":53,"options":54,"question":55,"source":28,"type":29},[],49524918,[8,9,10],"( )系统可用于无爆炸危险、火灾危险性不大、用电设备较少、用电线路简单且安全条件较好的场所",{"answer":57,"createTime":5,"id":58,"options":59,"question":63,"source":28,"type":29},[],49524919,[60,61,62],"发展","管理","安全","安全用电目标为( )",{"answer":65,"createTime":5,"id":66,"options":67,"question":68,"source":28,"type":29},[],49524920,[8,9,10],"保护接零系统中,保护零线与工作零线完全分开的系统是( )",{"answer":70,"createTime":5,"id":71,"options":72,"question":73,"source":28,"type":29},[],49524921,[8,9,10],"保护接零系统中,干线部分保护零线与工作零线完全共用的系统是( )",{"answer":75,"createTime":5,"id":6,"options":76,"question":18,"source":28,"type":29},[],[8,9,10],{"answer":78,"createTime":5,"id":79,"options":80,"question":84,"source":28,"type":29},[],49524923,[81,82,83],"4","10","20","避雷针应尽可能采用独立的接地装置,接地电阻一般不大于( )Ω"]