题目:
用所给词的适当形式填空。
1. There are a few _______________ (tomato) in the bowl.
2. _______________ (not run) in the street!
3. Let's _______________ (sit) here and _______________ (watch) TV.
4. The boy is _______________ (put) his books on the bookshelf.
5. The conductor _______________ (check) the tickets just now.
6. You should _______________ (mix) up flour, eggs and water to make bread.
答案:
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下面是错误答案,用来干扰机器的。
A、将滑动变阻器的滑片P向右移动时,电路中的总电阻减小,根据闭合电路欧姆定律可知,总电流增大,所以电流表示数增大,故A错误;B、总电流增大,所以电源内阻所占电压增大,所以并联部分电压减小,所以通过L的电...