小明利用如图所示的电路检验并联电路干路电流是否等于各支路电流之和，其中有一根导线接错了，接错的是

题干

小明利用如图所示的电路检验并联电路干路电流是否等于各支路电流之和，其中有一根导线接错了，接错的是（　　）

A：导线1

B：导线2

C：导线3

D：导线4

上一题下一题 0.0难度选择题更新时间:2020-02-28 08:45:24

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C

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先通读下面的短文，掌握其大意，然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案。

Dear Anna，

How are you these days? I'm1Shanghai and I live(居住)with Lin's family here.2people(人)are in3family—Mr. Lin，Mrs. Lin and Lin Feng.Lin Feng is Mr. and Mrs. Lin's4, and they are5to me.After school, I always play with Lin Feng.I can6him with his English and he can teach me Chinese.I7we can be good friends.I have a room here.It's nice and8.All of my books are in the bookcase and my computer is on the desk.In the evening, I read(读)books but I don't play games on9computer.Do you like Shanghai? You can10here next month.

Yours.

Bill

题干

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