[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fo3268mLEMIgmrXJmQFz67S-vQSaWITStqLbYB3HE4qk":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":13,"related":14,"source":20,"type":21},[],"2024-01-02 01:48:05",981899824,[8,9],"对","错",{"courseImg":11,"courseName":12},"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F159387e6a80f1adad8adaaf16b8079f8.jpg","电路分析（陕西国防工业职业技术学院）","串联谐振时,阻抗最小,且为纯电阻性,电流最小",[15,22,25,35,44,53,62,67,76,85],{"answer":16,"createTime":5,"id":17,"options":18,"question":19,"source":20,"type":21},[],981899820,[8,9],"三相四线制电路中必须要求中性线的可靠连接,中性线要具有足够的机械强度且阻抗要小,中性线上绝对不允许接入熔断器或开关","v2",3,{"answer":23,"createTime":5,"id":6,"options":24,"question":13,"source":20,"type":21},[],[8,9],{"answer":26,"createTime":5,"id":27,"options":28,"question":33,"source":20,"type":34},[],981899842,[29,30,31,32],"电压","电阻","电流","功率","理想电流源向外电路提供的( )是一常数",0,{"answer":36,"createTime":5,"id":37,"options":38,"question":43,"source":20,"type":34},[],981899882,[39,40,41,42],"防爆式","普通式","无所谓","没关系","在易燃易爆的危险环境中,必须采用( )",{"answer":45,"createTime":5,"id":46,"options":47,"question":52,"source":20,"type":34},[],981899892,[48,49,50,51],"-16","16","21","19","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2f01d3c7e0df733b754a8bea84e0532b.png\">",{"answer":54,"createTime":5,"id":55,"options":56,"question":61,"source":20,"type":34},[],981899927,[57,58,59,60],"无","保护性接零或接地","防锈漆","不需要","使用的电气设备按有关安全规程,其外壳应有什么防护措施?( )",{"answer":63,"createTime":5,"id":64,"options":65,"question":66,"source":20,"type":21},[],981899939,[8,9],"在纯电阻电路中,电路两端的电压与通过这段电路的电流的比值是一个恒量",{"answer":68,"createTime":5,"id":69,"options":70,"question":75,"source":20,"type":34},[],981899957,[71,72,73,74],"A管是用塑料制成的,B管是用铜制成的","A管是用铝制成的,B管是用胶木制成的","A管是用胶木制成的,B管是用塑料制成的","A管是用胶木制成的,B管是用铝制成的","如图所示,A、B为大小、形状均相同且内壁光滑,但用不同材料制成的圆管,竖直固定在相同高度.两个相同的磁性小球,同时从A、B管上端的管口无初速释放,穿过A管比穿过B管的小球先落到地面.下面对于两管的描述这可能正确的是:( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F72f0acf6c553f303d493b41f6b888e7f.png\">",{"answer":77,"createTime":5,"id":78,"options":79,"question":84,"source":20,"type":34},[],981899975,[80,81,82,83],"-2V","2V","-1V","3V","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F59447d399797b640a55fa18e07cc2a65.png\">",{"answer":86,"createTime":5,"id":87,"options":88,"question":94,"source":20,"type":34},[],981899981,[89,90,91,92,93],"不要乱拉电线,乱接用电设备,更不要利用&quot;一线一地&quot;方式接灯照明","不要在电力线路附近放风筝,打鸟,不在电杆或拉线上拴牲畜","如发现因电气障碍或漏电起火时,立即用水或酸、碱泡沫灭火器灭火","不要在电线上晒衣服","不要用湿手去摸灯口、开关和插座;更换灯泡时,要先关闭开关","违反安全用电常识的做法有( )"]