本课配套习题挑战模式1/5
在手电筒电路中,提供电能的是( )
A: 电池 |
B: 灯泡 |
C: 导线 |
D: 开关 |
- 提示1:PHA+5Zyo5omL55S1562S5Lit77yM55S15rqQ5piv55S15rGg77yM55So55S15Zmo5piv54Gv5rOh77yM5omA5Lul5o+Q5L6b55S16IO955qE6KOF572u5piv55S15rGg77yM5a+857q/5piv55So5p2l6L+e6YCa55S16Lev55qE77yM5byA5YWz5piv55S16Lev55qE5o6n5Yi26KOF572u44CCPC9wPg==
- 答案:QQ==
PGRpdj7lnKjmiYvnlLXnrZLkuK3vvIznlLXmupDmmK/nlLXmsaDvvIznlKjnlLXlmajmmK/nga/ms6HvvIzmiYDku6Xmj5DkvpvnlLXog73nmoToo4Xnva7mmK/nlLXmsaDvvIzogIzlr7znur/mmK/nlKjmnaXov57pgJrnlLXot6/nmoTvvIzlvIDlhbPmmK/nlLXot6/nmoTmjqfliLboo4Xnva7jgILliJlB6YCJ6aG55q2j56GuPC9kaXY+
本课配套习题挑战模式2/5
下列元件中,输送电能的元件是( )
A: 干电池 |
B: 灯泡 |
C: 开关 |
D: 导线 |
- 提示1:PHA+5Zyo55S16Lev5Lit77yM5a+857q/6L+e5o6l5ZCE5YWD5Lu277yM55S16Lev5o6l6YCa77yM5a+857q/55aP5a+855S15rWB77yM5omA5Lul5a+857q/5Y+v5Lul6L6T6YCB55S16IO9PC9wPg==
- 答案:RA==
PGRpdj7lnKjnlLXot6/kuK3vvIzlr7znur/ov57mjqXlkITlhYPku7bvvIznlLXot6/mjqXpgJrvvIzlr7znur/nlo/lr7znlLXmtYHvvIzmiYDku6Xlr7znur/lj6/ku6XovpPpgIHnlLXog73vvIzliJnpgInpoblE5q2j56GuPC9kaXY+
本课配套习题挑战模式3/5
下列各项中都属于用电器的是( )
A: 灯泡、灯座、洗衣机 |
B: 电动机、电炉、电饭煲 |
C: 闸刀开关、电熨斗、电冰箱 |
D: 日光灯、手电筒、蓄电池 |
- 提示1:PHA+54Gv5bqn5LiN5piv55So55S15ZmoLiDkuI3lkIjpopjmhI88L3A+
- 提示2:PHA+55S15Yqo5py644CB55S154KJ44CB55S16aWt54Wy6YO95piv5raI6ICX55S16IO955qE55So55S15ZmoLiDnrKblkIjpopjmhI88L3A+
- 提示3:PHA+5byA5YWz5piv5o6n5Yi255S16Lev6YCa5pat55qE77yM5LiN5raI6ICX55S16IO977yM5LiN5piv55So55S15ZmoLiDkuI3lkIjpopjmhI88L3A+
- 提示4:PHA+6JOE55S15rGg5piv55S15rqQ77yM5LiN5piv55So55S15ZmoLiDkuI3lkIjpopjmhI88L3A+
- 答案:Qg==
PGRpdj7nga/luqfkuI3mmK/nlKjnlLXlmaguIOS4jeWQiOmimOaEj++8m+eUteWKqOacuuOAgeeUteeCieOAgeeUtemlreeFsumDveaYr+a2iOiAl+eUteiDveeahOeUqOeUteWZqC4g56ym5ZCI6aKY5oSP77yb5byA5YWz5piv5o6n5Yi255S16Lev6YCa5pat55qE77yM5LiN5raI6ICX55S16IO977yM5LiN5piv55So55S15ZmoLiDkuI3lkIjpopjmhI/vvJvok4TnlLXmsaDmmK/nlLXmupDvvIzkuI3mmK/nlKjnlLXlmaguIOS4jeWQiOmimOaEj++8jOWImemAiemhuULmraPnoa48L2Rpdj4=
本课配套习题挑战模式4/5
电源和用电器在电路中的作用分别是( )
A: 电源提供电能,用电器消耗电能 |
B: 电源消耗电能,用电器提供电能 |
C: 都是提供电能 |
D: 都是消耗电能 |
- 提示1:PHA+55S15rqQ5piv5o+Q5L6b55S16IO955qE6KOF572u77yM55So55S15Zmo5piv5raI6ICX55S16IO955qE6KOF572uPC9wPg==
- 答案:QQ==
PGRpdj7nlLXmupDmmK/mj5DkvpvnlLXog73nmoToo4Xnva7vvIznlKjnlLXlmajmmK/mtojogJfnlLXog73nmoToo4Xnva7vvIzliJnpgInpoblB56ym5ZCI6aKY5oSPPC9kaXY+
本课配套习题挑战模式5/5
下列关于电路的说法中不正确的是( )
A: 一个完整的电路由电源、用电器、导线和开关组成 |
B: 电源的作用是给用电器供电,提供持续的电流 |
C: 只要能使用电器工作的电路就是一个完整的电路 |
D: 开关的作用是控制电路的通和断 |
- 提示1:PHA+55S16Lev5piv5oyH55So55S157q/5oqK55S15rqQ44CB55So55S15Zmo44CB5byA5YWz6L+e5o6l6LW35p2l57uE5oiQ55qE55S15rWB55qE6Lev5b6EPC9wPg==
- 提示2:PHA+55S15rqQ5piv5o+Q5L6b55S16IO95ZKM5oyB57ut55S15rWB55qE6KOF572uPC9wPg==
- 提示3:PHA+5pyA566A5Y2V55qE5a6M5pW055S16Lev5bqU5YyF5ous55S15rqQ44CB5byA5YWz44CB5a+857q/44CB55So55S15Zmo5Zub6YOo5YiGPC9wPg==
- 提示4:PHA+5byA5YWz5piv55So5p2l5o6n5Yi255S16Lev6YCa44CB5pat55qE6KOF572uPC9wPg==
- 答案:Qw==
PGRpdj7nlLXot6/mmK/mjIfnlKjnlLXnur/miornlLXmupDjgIHnlKjnlLXlmajjgIHlvIDlhbPov57mjqXotbfmnaXnu4TmiJDnmoTnlLXmtYHnmoTot6/lvoTvvJvnlLXmupDmmK/mj5DkvpvnlLXog73lkozmjIHnu63nlLXmtYHnmoToo4Xnva7vvJvmnIDnroDljZXnmoTlrozmlbTnlLXot6/lupTljIXmi6znlLXmupDjgIHlvIDlhbPjgIHlr7znur/jgIHnlKjnlLXlmajlm5vpg6jliIbvvJvlvIDlhbPmmK/nlKjmnaXmjqfliLbnlLXot6/pgJrjgIHmlq3nmoToo4Xnva7vvIzliJlD6YCJ6aG55q2j56GuPC9kaXY+