题干
如图，E为内阻不能忽略的电池，R1、R2、R3为定值电阻，S0、S为开关，
与
分别为电压表和电流表。初始时S0与S均闭合，现将S断开，则
与分别为电压表和电流表。初始时S0与S均闭合，现将S断开，则
A：的读数变大，的读数变小
B：的读数变大，的读数变大
C：的读数变小，的读数变小
D：的读数变小，![](http://tiku.21cnjy.com/tikupic/b6/5e/b625e7ef </p>
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<a href="/question/4013128.html">上一题</a> <a href="/question/4013130.html">下一题</a> 0.0难度 选择题 更新时间:2019-12-02 12:44:28
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<h2 class="title daan" data="4013129">答案(点此获取答案解析）</h2>
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B
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<h2 class="title">同类题1</h2>
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<p>已知∠A=40°，则∠A的补角等于（ ）</p>
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<h2 class="title">同类题2</h2>
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<p>下列叙述中，正确的是（ ）</p>
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<h2 class="title">同类题3</h2>
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一Mum，what time is it? <img width="94" height="80" data-cke-saved-src="/Upload/site3/5/0/501406b9d5144f01f068a7e4bdaaba50.png" src="/Upload/site3/5/0/501406b9d5144f01f068a7e4bdaaba50.png" v:shapes="图片_x0020_24"><p>一It)