[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f5SBlXrB4r77IGh8QtAph-O_Ki88_Tx0EFZLOIouzVDQ":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":24,"type":25},[],"2025-12-22 19:08:47",280570030,[8,9,10,11],"改变电源电压大小","改变励磁电流的大小","改变电源极性","改变电枢电流的方向或改变励磁电流的方向",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},65,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","exam_167985381","剑指CET-4:大学生英语能力基础","使直流电动机反转的方法是()",[21,26,35,44,53,62,71,80,89,98],{"answer":22,"createTime":5,"id":6,"options":23,"question":19,"source":24,"type":25},[],[8,9,10,11],"v1",0,{"answer":27,"createTime":5,"id":28,"options":29,"question":34,"source":24,"type":25},[],280570031,[30,31,32,33],"二相","三相","有功","无功","变压器按相数可分为单相变压器和()变压器",{"answer":36,"createTime":5,"id":37,"options":38,"question":43,"source":24,"type":25},[],280570032,[39,40,41,42],"体积小","效率高","功率因数较高","过载能力差","与同功率三相异步电动机相比,单相异步电动机()",{"answer":45,"createTime":5,"id":46,"options":47,"question":52,"source":24,"type":25},[],280570033,[48,49,50,51],"水平向内","水平向外","竖直向下","任意方向","拉线开关安装时,拉线出口应()",{"answer":54,"createTime":5,"id":55,"options":56,"question":61,"source":24,"type":25},[],280570034,[57,58,59,60],"单相绕组","三相绕组","笼型绕组","多相绕组","单相罩级式异步电动机的定子绕组为()",{"answer":63,"createTime":5,"id":64,"options":65,"question":70,"source":24,"type":25},[],280570035,[66,67,68,69],"电源两相","电源三相","电源一相","电源","按钮联锁正反转控制线路的优点是操作方便,缺点是容易产生()故",{"answer":72,"createTime":5,"id":73,"options":74,"question":79,"source":24,"type":25},[],280570036,[75,76,77,78],"电压","电流","电阻","电容","漏电保护器是漏电()动作保护器的简称",{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":24,"type":25},[],280570037,[84,85,86,87],"硬磁性材料","软磁性材料","矩磁性材料","逆磁性材料","变压器铁心的材料是()",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":24,"type":25},[],280570038,[93,94,95,96],"直流电阻","绝缘电阻","耐压强度","机械强度","电线电缆的绝缘厚度与()无关",{"answer":99,"createTime":5,"id":100,"options":101,"question":106,"source":24,"type":25},[],280570039,[102,103,104,105],"熔断器","热继电器","互锁环节","自锁环节","在正反转控制电路中,()可以防止正反转切换时发生短路"]