挑战习题
1
/5
单选题
难度:
1.以下几组答案中,元件均为用电器的是( )
A
电灯、开关、导线
B
电灯、开关、电池
C
电灯、电铃、电炉
D
电灯、电池、电炉
提示1:
55So55S15Zmo5bCG55S16IO96L2s5YyW5oiQ5YW25a6D5b2i5byP6IO955qE
正确答案:
Qw==
5a+857q/5piv5p2l5Lyg6L6T55S16IO955qE77yb5byA5YWz5piv5o6n5Yi255S16Lev55qE6YCa5pat77yM5pWFQULplJnor6/vvJvnlLXmupDmmK/mj5DkvpvnlLXog73vvIzlsIblhbblroPlvaLlvI/nmoTog73ovazljJbkuLrnlLXog73vvIzmlYVE6ZSZ6K+v77yb55S154Gv44CB55S16ZOD44CB55S154KJ562J6YO95piv5raI6ICX55S16IO977yM5bm25bCG55S16IO96L2s5YyW5Li65YW25a6D5b2i5byP55qE6IO977yM5pWFQ+ato+ehru+8juaVhemAiUPvvI4=
2
/5
单选题
难度:
2.下列家用电器中,不是利用电流热效应原理来工作的是( )
A
电熨斗
B
微波炉
C
电饭锅
D
电烤箱
提示1:
5b6u5rOi54KJ5piv5Yip55So55S156OB5rOi5p2l5bel5L2c55qE
正确答案:
Qg==
55S154ao5paX44CB55S16aWt6ZSF5ZKM55S154Ok566x6YO95piv5Yip55So55S15rWB55qE54Ot5pWI5bqU5bel5L2c55qE77yb5b6u5rOi54KJ5piv5Yip55So55S156OB5rOi5p2l5bel5L2c55qE77yM5LiN5piv55S15rWB55qE54Ot5pWI5bqU77yM6K+l6YCJ6aG556ym5ZCI6aKY5oSP77yb5pWF6YCJQu+8jg==
3
/5
单选题
难度:
3.在家庭照明电路中,当开关闭合,保险丝马上熔断,电灯不亮,其原因可能是( )
A
灯泡的灯丝断了
B
开关接触不良
C
灯座发生短路
D
开关发生短路
提示1:
5a625bqt55S16Lev5Lit55S15rWB6L+H5aSn5L+d6Zmp5Lid5omN5Lya54aU5pat
正确答案:
Qw==
QeOAgULpg73lsZ7kuo7nlLXot6/mlq3ot6/vvIznlLXot6/kuK3msqHmnInnlLXmtYHvvIzkv53pmankuJ3kuI3kvJrnhpTmlq3vvJvlvIDlhbPnn63ot6/nm7jlvZPkuo7lvIDlhbPpl63lkIjvvIzkv53pmankuJ3kuI3kvJrnhpTmlq3vvI7nga/luqfnn63ot6/vvIzkvJrpgKDmiJDnlLXot6/nlLXmtYHov4flpKfvvIzkv53pmankuJ3nhpTmlq3vvI7mlYXpgIlD77yO
4
/5
单选题
难度:
4.下列说法中正确的是()
A
闸刀开关安装在电能表之前,目的是控制整个家庭电路
B
电能表安装在进户线之后,用来量度家庭所消耗的电功率的多少
C
电灯和插座都并联在由火线和零线组成的家庭电路上
D
电灯与控制它的开关并联
提示1:
55S16IO96KGo5a6J6KOF5Zyo6L+b5oi357q/5LmL5ZCO77yM55So5p2l6YeP5bqm5a625bqt5omA5raI6ICX55qE55S16IO9
提示2:
55S154Gv5LiO5o6n5Yi25a6D55qE5byA5YWz5Liy6IGU
正确答案:
Qw==
55S16IO96KGo5a6J6KOF5Zyo6L+b5oi357q/5LmL5ZCO77yM55So5p2l6YeP5bqm5a625bqt5omA5raI6ICX55qE55S16IO977yM5omA5LulQeOAgULlnYfplJnor6/vvJvlrrbluq3nlLXot6/kuK3nlKjnlLXlmajkuYvpl7TlupTor6XlubbogZTvvIzmiYDku6VD5q2j56Gu77yb55So55S15Zmo5LiO5o6n5Yi25a6D55qE5byA5YWz5Liy6IGU77yM5omA5LulROmUmeivr++8m+aVhemAiUMu
5
/5
单选题
难度:
5.小明同学根据家庭电路画了如图所示的电路图,其中包括插座1、插座2、电灯L和开关S,图中元件的接法画错了的是( )
A
电灯L
B
插座1
C
插座2
D
开关S
提示1:
5byA5YWz6KaB5o6l5Zyo54Gr57q/5ZKM55So55S15Zmo5LmL6Ze0
提示2:
5o+S5bqn55qE6L+e5o6l6KaB56ym5ZCI5bem5a2U5o6l54Gr57q/77yM5Y+z5a2U5o6l6Zu257q/55qE5Y6f5YiZ
正确答案:
Qw==
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