发电机纵差保护的作用？
参考答案：
反映定子绕组及其引出线的相间短路。
—Mum, I hope we can spend our holiday abroad this year.
—______ I’m too busy to take a trip abroad.
A．Better forget it.
B．Why not?
C．It couldn’t be better
D．Good idea!
用括号内所给单词的适当形式填空。
1. This kink of the fruits ______(taste) very sweet.
2. I want to ask him ______(have) a look at the book.
3. You must ______(finish) doing your home work.
4. What is he ______(make)?
5. Li Ming is going there ______(meet) his a friend.
所给单词的适当形式填空。