1/5单选题
难度：
1.
如图所示电路，要使灯泡L1和L2组成串联电路，应该（ ）
| A | 只闭合S3 |
| B | 只闭合S1 |
| C | 同时闭合S1和S2 |
| D | 同时闭合S1和S3 |
- 提示1：
- PHA+55So55S15rWB5rWB5ZCR5rOV5Yik5pat55S16Lev54q25oCB77yM55S15rWB5LuO55S15rqQ5q2j5p6B5Ye65Y+R5pyA5ZCO5Zue5Yiw6LSf5p6B77yM6YCU5Lit5YiG5rWB77yM5YiZ5Li65bm26IGU44CCPGJyPjwvcD4=
正确答案：Qg==
PGRpdj7kuLLogZTnlLXot6/lj6rmnInkuIDmnaHnlLXmtYHot6/lvoTvvIzmtYHov4fkuIDkuKrlhYPku7bnmoTnlLXmtYHlkIzml7bmtYHov4flj6bkuIDkuKrlhYPku7bvvIzlm6DmraTlkITlhYPku7bnm7jkupLlvbHlk43vvJvms6jmhI/nlKjnlLXlmajkuI3og73ooqvnn63ot6/vvIznu4/liKTmlq1C6YCJ6aG55q2j56Gu44CCPC9kaXY+
2/5单选题
难度：
2.
如图所示的电路，要使两个小灯泡L1，L2串联，应（ ）
| A | 断开开关S1，S2，闭合开关S3 |
| B | 断开开关S1，S3，闭合开关S2 |
| C | 断开开关S1，闭合开关S2，S3 |
| D | 断开开关S2，闭合开关S1，S3 |
- 提示1：
- PHA+55So55S15rWB5rWB5ZCR5rOV5Yik5pat55S16Lev54q25oCB77yM55S15rWB5LuO55S15rqQ5q2j5p6B5Ye65Y+R5pyA5ZCO5Zue5Yiw6LSf5p6B77yM6YCU5Lit5YiG5rWB77yM5YiZ5Li65bm26IGU77yM5LiN5YiG5rWB77yM55S16Lev5Li65Liy6IGU55S16Lev44CCPGJyPjwvcD4=
正确答案：Qg==
PGRpdj7nlLXmtYHku47mraPmnoHlvIDlp4vvvIzkvp3mrKHnu4/ov4fnga/ms6FMPHN1Yj4xPC9zdWI+44CBUzxzdWI+Mjwvc3ViPuOAgUw8c3ViPjI8L3N1Yj7lm57liLDnlLXmupDotJ/mnoHvvIzlm6DmraTmlq3lvIDlvIDlhbNTPHN1Yj4xPC9zdWI+77yMUzxzdWI+Mzwvc3ViPu+8jOmXreWQiOW8gOWFs1M8c3ViPjI8L3N1Yj48L2Rpdj4=
3/5多选题
难度：
3.
如图所示，下列分析正确的是（ ）
| A | 只闭合S1时，L2发光、L1不发光，A2测L2电流 |
| B | 只闭合S1时，L1发光、L2不发光，A1测L1电流 |
| C | 闭合S1、S2时，L1、L2并联，A2测L2电流 |
| D | 闭合S1、S2时，L1、L2串联，A1、A2示数相等 |
- 提示1：
- PHA+QeOAgeWPqumXreWQiFM8c3ViPjE8L3N1Yj7ml7bvvIznlLHkuo5TPHN1Yj4yPC9zdWI+5pat5byA77yM54Gv5rOhTDxzdWI+Mjwvc3ViPuayoeacieaOpemAmu+8jOeUtei3r+S4reWPquacieeBr+azoUw8c3ViPjE8L3N1Yj7ov57lhaXnlLXot6/vvIzliJlMPHN1Yj4xPC9zdWI+5Y+R5YWJ44CBTDxzdWI+Mjwvc3ViPuS4jeWPkeWFiTwvcD4=
- 提示2：
- PHA+5Y+q6Zet5ZCIUzxzdWI+MTwvc3ViPuaXtu+8jOeUtea1geihqOa1i0w8c3ViPjE8L3N1Yj7nmoTnlLXmtYE8L3A+
- 提示3：
- PHA+6Zet5ZCIUzxzdWI+MTwvc3ViPuOAgVM8c3ViPjI8L3N1Yj7ml7bvvIznlLXmtYHliIbliKvmtYHlhaVMPHN1Yj4xPC9zdWI+44CBTDxzdWI+Mjwvc3ViPu+8jOWImUw8c3ViPjE8L3N1Yj7jgIFMPHN1Yj4yPC9zdWI+5bm26IGU77yMIEE8c3ViPjI8L3N1Yj7kuI5MPHN1Yj4yPC9zdWI+5Liy6IGU77yM5omA5Lul5rWLTDxzdWI+Mjwvc3ViPueUtea1gTwvcD4=
正确答案：QixD
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
4/5多选题
难度：
4.
下面图中，当开关闭合时，四个电路图两个灯泡组成并联的是（ ）
| A |
|
| B |
|
| C |
|
| D |
|
- 提示1：
- PHA+5Yip55So55S15rWB5rWB5ZCR5rOV5Yik5pat55S16Lev54q25oCB77yM55S15rWB5LuO55S15rqQ5q2j5p6B5Ye65Y+R77yM6YCU5Lit5YiG5rWB77yM5YiZ5Li65bm26IGU44CCPGJyPjwvcD4=
正确答案：QSxD
PGRpdj5B6YCJ6aG577yM55S15rWB5LuO55S15rqQ5q2j5p6B5Ye65Y+R77yM55S15rWB5YiG5rWB77yM5LiA6YOo5YiG5LuO5LiK6Z2i55qE54Gv5rOh6LWw77yM5LiA6YOo5YiG5LuO5LiL6Z2i55qE54Gv5rOh6LWw77yM5YiZ55S16Lev5Li65bm26IGU55S16Lev77ybPGJyPjwvZGl2PjxkaXY+QumAiemhue+8jOeUtea1geWcqOeUseato+aegeWIsOi0n+aegeeahOi/h+eoi+S4reS4jeWIhua1ge+8jOWImeeUtei3r+S4uuS4suiBlOeUtei3r++8mzxicj48L2Rpdj48ZGl2PkPpgInpobnvvIznlLXmtYHlnKjlm77kuK3liIbmtYHvvIzkuIDpg6jliIbku45MPHN1Yj4xPC9zdWI+6LWw77yM5LiA6YOo5YiG5LuOTDxzdWI+Mjwvc3ViPui1sO+8jOeUtei3r+S4uuW5tuiBlOeUtei3r++8mzxicj48L2Rpdj48ZGl2PkTpgInpobnvvIzlvIDlhbNz6Zet5ZCI77yM54GvTDxzdWI+Mjwvc3ViPuiiq+efrei3r++8mzxzdWI+PC9zdWI+PGJyPjwvZGl2PjxkaXY+5YiZQUPpgInpobnmraPnoa48YnI+PC9kaXY+
5/5单选题
难度：
5.
在如图所示的各电路图中，能反映出L1、L2并联，开关S断开后L1仍能发光的是（ ）
| A |
|
| B |
|
| C |
|
| D |
|
- 提示1：
- PHA+55So55S15rWB5rWB5ZCR5rOV5Yik5pat55S16Lev54q25oCB77yM55S15rWB5LuO55S15rqQ5q2j5p6B5Ye65Y+R5pyA5ZCO5Zue5Yiw6LSf5p6B77yM6YCU5Lit5YiG5rWB77yM5YiZ5Li65bm26IGU44CCPGJyPjwvcD4=
- 提示2：
- PHA+TDxzdWI+MTwvc3ViPuOAgUw8c3ViPjI8L3N1Yj7lubbogZTvvIzlvIDlhbNT5pat5byA5ZCOTDxzdWI+MTwvc3ViPuS7jeiDveWPkeWFie+8jOivtOaYjuW8gOWFs+S4jeiDveebtOaOpeaOp+WItkw8c3ViPjE8L3N1Yj48L3A+
正确答案：Qw==
PGRpdj5BIEw8c3ViPjE8L3N1Yj48c3ViPuOAgTwvc3ViPkw8c3ViPjI8L3N1Yj48c3ViPuS4suiBlDwvc3ViPjwvZGl2PjxkaXY+QiBMPHN1Yj4xPC9zdWI+44CBTDxzdWI+Mjwvc3ViPuW5tuiBlO+8jOS9huaYr+W8gOWFs+aWreW8gO+8jOS4pOeBr+azoeWdh+S4jeS6rjwvZGl2PjxkaXY+RCBMPHN1Yj4xPC9zdWI+44CBTDxzdWI+Mjwvc3ViPuW5tuiBlO+8jOW8gOWFs+aWreW8gEw8c3ViPjE8L3N1Yj7kuI3kuq7vvIznga9MPHN1Yj4yPC9zdWI+5LquPC9kaXY+