380V、2kW交流异步电动机交流耐压试验电压为（）。
A.380V
B.500V
C.1000V
D.1500V
参考答案：D
根据汉语提示填入单词的适当形式。
1. Robert enjoys _____ (收集) stamps. And now he has 300 of them.
2. She will be the _____ (第五个) to speak at the meeting.
3. I am really sorry I was late. I just _____ (错过) the early bus this morning.
4. Nancy is _____ (在楼下). Go and find her yourself.
用度分秒表示：24. 240=_ ▲ ．
