兆欧表专门用来测量绝缘电阻,需要较高的测量电压,一般为()V。
参考答案:500
用所给单词的适当形式填空。
1. That is _____ ( he) bag.
2. These books _____ ( be) Jim's.
3. Are those your _____ ( CD) ?
4. Please bring me some _____ ( photo) .
5. Can you _____ ( take) the book to your sister?
6. _____ ( thank) for your ruler.
7. I ____ ( not) know your name.
8. Here _____ ( be) my room.
9. Where _____ ( be) your pencils?
10. _____ (it) are under the table.