避雷针的工作原理是{"A":"\u5e93\u4ed1\u5b9a\u5f8b","B":"\u9759\u7535\u9664\u5c18","C":"\u5c16\u7aef\u653e\u7535","D":"\_刷题宝

题干

避雷针的工作原理是（）

A：库仑定律

B：静电除尘

C：尖端放电

D：电流的热效应

上一题下一题 0.0难度选择题更新时间:2020-03-03 11:20:08

答案(点此获取答案解析）

C

同类题1

如图为“某农场”农田生态系统中部分生物的食物网简图，请回答：

同类题2

He is writing a book about new discoveries in science. I am sure, _________ it is printed, this book will be very popular.

同类题3

— How long do you think it will be _______ the USA recovers from the losses of the financial crisis?
— Perhaps four or five years.

同类题4

在寻求友谊的过程中，应引起大家注意并避免的问题是（）

①言而有信。②讲“哥们义气”。③以我为中心。④因自己某方面优越而看不起别人。

同类题5

阅读理解

Hello, my name is John. I have PE, art and English on Tuesday（星期二）. It's my favourite day. I like English. Look, that is my math teacher. He's very kind. His name is Li Hai. I like beef very much, but I don't like apples. I like bananas, too.

小学学科试题库

初中学科试题库

高中学科试题库