问题
单项选择题
船舶同步发电机自动调压装置，常选用（）作为励磁电源的励磁方式。
A.直流励磁机
B.静止励磁装置
C.超导励磁机
D.蓄电池
答案
参考答案：A
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船舶同步发电机自动调压装置，常选用（）作为励磁电源的励磁方式。
A.直流励磁机
B.静止励磁装置
C.超导励磁机
D.蓄电池
参考答案：A
| 补全对话。 | |
| A: What's the matter, Mr Smith? B: __1__ I can't do any work, doctor. A: Do you have a cough? B: No, I don't have a cough. A: __2__ B: Yes, I sleep very well. A: Do you have breakfast every morning? B: No, I don't have breakfast. And I have only a little food for lunch and supper because I want to keep thin. A: Oh, I see. __3__ You need to eat more food and have three meals a day. __4__ B: OK. I will do like this. A: __5__ B: Thank you very much.
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