[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fgMLVzhX27c3O6rzcStVkYHwOlCClfkskWUwBYHLMbxg":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":11,"question":15,"related":16,"source":20,"type":21},[],"2023-11-06 09:02:21",103567236,[8,9,10],"1200 1500","1500 1200","220 36",{"courseId":12,"courseImg":13,"courseName":14},"23ad2173c3920ca9f7b52a38c352e0ec","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb4ee26a82c5cf195a26e8f2a14979d0b.png","工业自动化","低压电器标准规定,低压电器通常是指工作在交流电压小于( ),直流电压小于( )的电路中起通断、保护、控制或调节作用的电器设备",[17,22,31,40,46,51],{"answer":18,"createTime":5,"id":6,"options":19,"question":15,"source":20,"type":21},[],[8,9,10],"v1",0,{"answer":23,"createTime":5,"id":24,"options":25,"question":30,"source":20,"type":21},[],103567239,[26,27,28,29],"电压 少 小","电流 少 小","电压 多 大","电流 多 大","中间继电器实质是一种()继电器,触点对数( ),触点容量( ),动作灵敏度高",{"answer":32,"createTime":5,"id":33,"options":34,"question":39,"source":20,"type":21},[],103567241,[35,36,37,38],"并联 多 细","串联 多 细","并联 少 粗","串联 少 粗","电压继电器的线圈与负载( ).线圈匝数(),导线( )",{"answer":41,"createTime":5,"id":42,"options":43,"question":44,"source":20,"type":45},[],103567244,[],"在电气控制系统图指的是三种类型的图,分别为:1.电气 图; 2、电器 图;电气 图",2,{"answer":47,"createTime":5,"id":48,"options":49,"question":50,"source":20,"type":45},[],103567246,[],"笼型三相异步电动机全压起动控制线路中,短路保护利用 ;过载保护利用 ;欠压、失压保护利用",{"answer":52,"createTime":5,"id":53,"options":54,"question":55,"source":20,"type":45},[],103567249,[],"PLC中 每一个扫描周期分为 &mdash;&mdash; &mdash;&mdash; &mdash;&mdash;3个阶段"]