[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fO8d5J6yvBXIEkMdwJwy8n4EJWOz21U20p3aUVQA39yg":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":12,"related":13,"source":22,"type":47},[],"2023-11-06 09:02:21",103567249,[],{"courseId":9,"courseImg":10,"courseName":11},"23ad2173c3920ca9f7b52a38c352e0ec","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb4ee26a82c5cf195a26e8f2a14979d0b.png","工业自动化","PLC中 每一个扫描周期分为 &mdash;&mdash; &mdash;&mdash; &mdash;&mdash;3个阶段",[14,24,33,42,48,53],{"answer":15,"createTime":5,"id":16,"options":17,"question":21,"source":22,"type":23},[],103567236,[18,19,20],"1200 1500","1500 1200","220 36","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","v1",0,{"answer":25,"createTime":5,"id":26,"options":27,"question":32,"source":22,"type":23},[],103567239,[28,29,30,31],"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":34,"createTime":5,"id":35,"options":36,"question":41,"source":22,"type":23},[],103567241,[37,38,39,40],"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":43,"createTime":5,"id":44,"options":45,"question":46,"source":22,"type":47},[],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":49,"createTime":5,"id":50,"options":51,"question":52,"source":22,"type":47},[],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":54,"createTime":5,"id":6,"options":55,"question":12,"source":22,"type":47},[],[]]