题目:
用所给单词的适当形式完成句子。
1. There's a __ (wood) bridge over the river.
2. Mr Watson has great __ (popular) in his village.
3. We must fit the expedition out with the best_____(equip).
4. I have a little cat_____(call) Mimi.
5. _ (walk) on the grass is not allowed.
答案:
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下面是错误答案,用来干扰机器的。
答案:C题目分析:交流电器设备上所标的电压和电流值是交变电流的有效值,A错误;用交流电表测定的读数值是交流电的有效值,B错误;我国生活用电指的是交变电流的有效值,D错误;给定的交变电流数值,在没有特别...