[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fnJVwJuXa2cnGhmnJ6FmR-dChNlf3-z7-F2hL55g9RwQ":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":25,"type":26},[],"2026-04-16 13:30:11",342156803,[8,9,10,11],"厂用电率、网损率、电压畸变率","电压偏移、频率偏移、网损率","电压偏移、频率偏移、波形畸变率","厂用电率、燃料消耗率、网损率",{"courseId":13,"courseImg":14,"courseName":15},"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","衡量电能质量的技术指标是( )",[18,27,34,43,52,61,70,79,88,96],{"answer":19,"createTime":5,"id":20,"options":21,"question":24,"source":25,"type":26},[],342156794,[22,23],"不对称分量法","对称分量法","分析不对称短路的方法是 ()","v1",0,{"answer":28,"createTime":5,"id":29,"options":30,"question":33,"source":25,"type":26},[],342156795,[31,32],"线电压","1.5相电压","中性点不接地系统发生单相接地短路时,非故障相电压升高至()",{"answer":35,"createTime":5,"id":36,"options":37,"question":42,"source":25,"type":26},[],342156796,[38,39,40,41],"频率的大小","绝缘水平","有功功率平衡","无功功率平衡","电压的偏移取决于()",{"answer":44,"createTime":5,"id":45,"options":46,"question":51,"source":25,"type":26},[],342156797,[47,48,49,50],"±0.5 Hz","±0.7 Hz","±0.2 Hz~±0.5 Hz","±0.1 Hz~±0.7 Hz","我国电力系统的频率,正常运行时允许的偏移范围是( )",{"answer":53,"createTime":5,"id":54,"options":55,"question":60,"source":25,"type":26},[],342156798,[56,57,58,59],"根据系统频率的变化,切除或投入负荷,将电力系统频率限制在允许范围","根据负荷的变化,调整电力系统中无功电源的出力,将系统频率限制在允许范围","根据负荷的变化调整系统中变压器的分接头,将电力系统频率限制在允许范围","根据负荷的变化,调整发电机的有功出力,将系统频率限制在允许范围","电力系统频率调整的基本原理是( )",{"answer":62,"createTime":5,"id":63,"options":64,"question":69,"source":25,"type":26},[],342156799,[65,66,67,68],"越小","一样","都不对","越大","相同截面的导线,使用的电压等级越高,其电阻( )",{"answer":71,"createTime":5,"id":72,"options":73,"question":78,"source":25,"type":26},[],342156800,[74,75,76,77],"1","4","2","3","一般机加工和城镇用电属( )类负荷",{"answer":80,"createTime":5,"id":81,"options":82,"question":87,"source":25,"type":26},[],342156801,[83,84,85,86],"校验熔断器的断流能力","校验断路器的断流能力","选择断路器的额定电流","选择熔断器的额定电流","短路电流的最大有效值可用来()",{"answer":89,"createTime":5,"id":90,"options":91,"question":95,"source":25,"type":26},[],342156802,[92,93,67,94],"不变","低","高","中性点不接地系统对设备绝缘的要求( )",{"answer":97,"createTime":5,"id":6,"options":98,"question":16,"source":25,"type":26},[],[8,9,10,11]]