[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fFBRycBAh66z4Ma4HQKS5ZwmCH-Lno1ImnQUkIvviqcs":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":28,"type":29},[],"2026-04-12 23:30:02",186819185,[8,9,10,11],"3","6","2","4",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},45,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","89811f3ae4fa4c29947653961e6124d2","特种作业操作证理论练习2","接地刀闸用于检修时将设备可靠接地,从而保证检修工作的安全,也可作为变压器中性点的接地开关.图中哪个标号是表示接地刀闸?( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff5b7670abeaa7ed2061b10593e5df062.png\">",[21,30,35,40,49,54,64,73,76,85],{"answer":22,"createTime":5,"id":23,"options":24,"question":27,"source":28,"type":29},[],186819178,[25,11,10,26],"1","5","具有完善的灭弧系统,可以接通或断开发生短路故障的电路的开关设备,称为断路器.在屋内高压开关柜中,常采用手车式断路器(也称小车式断路器),在如下电气主接线图中,手车式断路器的标号是( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fffba155b69819ba7f9404d952733d267.png\">","v1",0,{"answer":31,"createTime":5,"id":32,"options":33,"question":34,"source":28,"type":29},[],186819179,[25,26,11,8],"隔离开关没有熄灭电弧的能力,不能开断或接通大电流,但断开后动触头与静触头之间会形成明显的断点,常与断路器配合保证检修工作的安全,也可分合电压互感器等小电流设备. 在如下电气主接线图中,隔离开关的代号是( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F430d287c33160f97f5d0329f46a58830.png\">",{"answer":36,"createTime":5,"id":37,"options":38,"question":39,"source":28,"type":29},[],186819180,[8,25,11,9],"图中( )号虚线框表示电缆终端头,说明其后面线路为电缆连接.\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb4accd9e8baf35bb6d4c791fdc0096f7.png\">",{"answer":41,"createTime":5,"id":42,"options":43,"question":48,"source":28,"type":29},[],186819181,[44,45,46,47],"7号为双绕组励磁变压器;8号为双绕组的电压互感器","7号与8号均为双绕组的电压互感器","7号为双绕组电压互感器;8号为双绕组的励磁变压器","7号为三线圈变压器;8号为双线圈变压器","图中7号与8号设备采用相同的图形符号,但文字符号不一样,下列答案哪个正确( ).\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb4accd9e8baf35bb6d4c791fdc0096f7.png\">",{"answer":50,"createTime":5,"id":51,"options":52,"question":53,"source":28,"type":29},[],186819182,[9,10,11,8],"为了防止雷击损坏电气设备或线路绝缘,需要装设避雷针、避雷线、避雷带和避雷器等防雷设施或设备,图中哪个标号是避雷器( ).\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff5b7670abeaa7ed2061b10593e5df062.png\">",{"answer":55,"createTime":56,"id":57,"options":58,"question":63,"source":28,"type":29},[],"2025-05-10 13:27:41",186819183,[59,60,61,62],"7回","2回","6回","3回","图中架空线杆塔上有多少回输电线?( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F248c376f9c78abfffc5a6076343dd22e.png\">",{"answer":65,"createTime":5,"id":66,"options":67,"question":72,"source":28,"type":29},[],186819184,[68,69,70,71],"装设了避雷器","没有安装任何避雷设施或设备","装设了避雷针","装设了避雷线","图中架空线采用的避雷措施是( ).\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7e89f9823ea4df9a419efd49ad8166e9.png\">",{"answer":74,"createTime":5,"id":6,"options":75,"question":19,"source":28,"type":29},[],[8,9,10,11],{"answer":77,"createTime":5,"id":78,"options":79,"question":84,"source":28,"type":29},[],186819186,[80,81,82,83],"熔断器在电路中是保护器件,分户外与户内式两类","熔断器在电路中起短路保护作用","熔断器常用作小型变压器、电压互感器的保护元件","熔断器在电路中是开关器件","熔断器俗称保险,电路中文字符号为FU,图形符号如下,关于它的错误说法是哪条?( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9d5f2f0cd6ba6fbce1d214861967bb3d.png\">",{"answer":86,"createTime":5,"id":87,"options":88,"question":92,"source":28,"type":29},[],186819187,[89,90,9,91],"8","9","7","水轮发电机是指由水轮机拖动的同步发电机,水轮机给发电机输入机械功率,发电机将机械能转化为电能输出,其基本工作原理为电磁感应原理.下图中哪号设备为发电机?( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff908a5600919e9c96bd3a5d08488662f.png\">"]