本课配套习题挑战模式1/5
单选题
难度系数:
1.
下列关于电源与用电器说法正确的是( )
A: 电源是把化学能转化为电能的装置 |
B: 电源是把其它形式的能转化为电能的装置 |
C: 充电电池只能做电源,不能做用电器 |
D: 用电器是产生电能的装置 |
一次做对,真牛!
+5奖励规则>
- 提示1:PHA+55S15rqQ5piv5oqK5YW25a6D5b2i5byP55qE6IO96L2s5YyW5Li655S16IO955qE6KOF572u77yM5aaC5rC05Yqb5Y+R55S15bCx5piv5bCG5py65qKw6IO96L2s5YyW5Li655S16IO977yM5bmy55S15rGg5piv5bCG5YyW5a2m6IO96L2s5YyW5Li655S16IO9PC9wPg==
- 答案:Qg==
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
本课配套习题挑战模式3/5
单选题
难度系数:
3.下列关于电流和电路的说法中,错误的是 ( )
A: 电源是提供电能的装置 |
B: 用电器是将其他形式的能转化为电能的装置 |
C: 电荷的定向移动形成电流 |
D: 电流沿着“正极→用电器→负极”的方向流动 |
一次做对,真牛!
+5奖励规则>
- 提示1:55S15rqQ5piv5o+Q5L6b55S16IO955qE6KOF572u
- 提示2:55S15rWB55qE5pa55ZCR
- 答案:Qg==
QeOAgeeUtea6kOaYr+WwhuWFtuWug+W9ouW8j+eahOiDvei9rOWMluS4uueUteiDve+8jOWug+WcqOeUtei3r+S4reaYr+aPkOS+m+eUteiDveeahO+8jOaVhUHmraPnoa7vvJtC44CB55So55S15Zmo5piv5raI6ICX55S16IO955qE6KOF572u77yM5a6D5bCG55S16IO96L2s5YyW5Li65YW25a6D5b2i5byP55qE6IO977yM5pWFQumUmeivr++8m0PjgIHnlLXojbfnmoTlrprlkJHnp7vliqjlvaLmiJDkuobnlLXmtYHvvIzmlYVD5q2j56Gu77ybROOAgeeJqeeQhuS4reaKiuato+eUteiNt+WumuWQkeenu+WKqOeahOaWueWQkeinhOWumuS4uueUtea1geeahOaWueWQke+8jOaMieeFp+i/meS4quinhOWumu+8jOWcqOeUtea6kOWklumDqO+8jOeUtea1geaWueWQkeaYr+ayv+edgOKAnOato+aegeKGkueUqOeUteWZqOKGkui0n+aegeKAneeahOaWueWQkea1geWKqO+8jOaVhUTmraPnoa7vvI7miYDku6XnrZTmoYjkuLpC77yO
本课配套习题挑战模式4/5
单选题
难度系数:
4.下列选项中不属于电路组成部分的是()
A: 电源 |
B: 开关 |
C: 用电器 |
D: 磁铁 |
一次做对,真牛!
+5奖励规则>
- 提示1:55S16Lev5piv5oqK55S15rqQ77yM5byA5YWz77yM55So55S15Zmo55So5a+857q/6L+e5o6l6LW35p2l57uE5oiQ55S15rWB55qE6Lev5b6E
- 答案:RA==
55S16Lev5piv55Sx55S15rqQ77yM5byA5YWz77yM55So55S15Zmo5ZKM5a+857q/57uE5oiQ55qE77yM56OB6ZOB5LiN5piv55S16Lev55qE57uE5oiQ6YOo5YiG77yM5omA5Lul562U5qGI5Li6RC4=
本课配套习题挑战模式5/5
单选题
难度系数:
5.关于电流,下列说法正确的是( )
A: 电荷的定向移动形成电流 |
B: 只有正电荷的定向移动才能形成电流 |
C: 只有自由电子的定向移动才能形成电流 |
D: 电流的方向就是自由电子的定向移动方向 |
一次做对,真牛!
+5奖励规则>
- 提示1:55S16I235a6a5ZCR56e75Yqo5b2i5oiQ55S15rWB
- 提示2:55S15rWB55qE5pa55ZCR5Li65q2j55S16I235a6a5ZCR56e75Yqo55qE5pa55ZCR
- 答案:QQ==
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