[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fgrkkmrqlFvhLDASmtLZIAqpgWK9DaKtUJCmFgraZT38":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2024-06-17 09:13:11",152256004,[8,9,10,11],"熔断器","热继电器","过流继电器","断路器",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},24,"205444577d748730ae49893094428f40","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7635da5a7161a45f7cc2dba6775ed81d.jpg","PLC应用技术","work_35719947","作业1 常用低压电器","‎下列电器中不能进行短路保护的是( )",[21,32,35,44,53,62,70,78,87,96],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],152256003,[25,26,27,28],"通断主电路","通断控制电路","保护主电路","保护控制电路","‎交流接触器的作用( )","v1",0,{"answer":33,"createTime":5,"id":6,"options":34,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":36,"createTime":5,"id":37,"options":38,"question":43,"source":30,"type":31},[],152256005,[39,40,41,42],"绿色","红色","黑色","褐色","接钮帽做成不同颜色用以区分各按钮的作用,一般用( )色表示起动按钮",{"answer":45,"createTime":5,"id":46,"options":47,"question":52,"source":30,"type":31},[],152256006,[48,49,50,51],"电动机定子","转子","电源进线","负载","刀开关在接线时应将( )接在刀开关上端",{"answer":54,"createTime":5,"id":55,"options":56,"question":61,"source":30,"type":31},[],152256007,[57,58,59,60],"按钮","中间继电器","接触器","电子式时间继电器","以下低压电器属于无触头电器的是( )",{"answer":63,"createTime":5,"id":64,"options":65,"question":69,"source":30,"type":31},[],152256008,[66,57,67,68],"刀开关","行程开关","转换开关","以下低压电器属于自动切换电器的是( )",{"answer":71,"createTime":5,"id":72,"options":73,"question":77,"source":30,"type":31},[],152256009,[74,75,76],"外壳","熔体","支座","当电路中的电流超过规定值时,熔断器以本身产生的热量使( )熔断",{"answer":79,"createTime":5,"id":80,"options":81,"question":86,"source":30,"type":31},[],152256010,[82,83,84,85],"电路的分断时间加长","电路的分断时间缩短","电路的分断时间不变","分断能力提高","由于电弧的存在,将导致( )",{"answer":88,"createTime":5,"id":89,"options":90,"question":95,"source":30,"type":31},[],152256011,[91,92,93,94],"电磁机构","触点系统","灭弧装置","脱扣机构","下面( ) 不是接触器的组成部分｡",{"answer":97,"createTime":98,"id":99,"options":100,"question":101,"source":30,"type":102},[],"2024-06-18 09:48:23",152704907,[],"热继电器是利用电流流过发热元件产生热量来使检测元件受热弯曲,进而推动机构动作的一种保护电器,主要被用作电动机的长期( )保护",2]