接触器是用来对电压在()以下的配电装置或其他电器远距离操纵或自动控制的开关。
A、500V
B、1000V
C、1500V
D、2000V
参考答案:A
加强速饱和变流器型差动继电器中的短路线圈在中、小型变压器上选择()匝数,而在容量较大原变压器上选较()匝数。
根据句意,选择括号里适当的词,使句子完整。
1. I (will / would) bring drinks to the party tonight.
2. While you (watched / were watching) TV, I was doing my homework.
3. I don't have enough money. Maybe I (should / shouldn't) get a part-time job.
4. I think there will be (fewer /less) pollution in ten years.
5. (How many / How much) cheese do we need for the pizza?
6. If you don't go to Lisa's party, you'll (sorry / be sorry).
7. We (was having / were having) our dinner when the policeman came.
8. My math teacher (say / said) I was too lazy.
9. You should (wear / wearing) your cool T-shirt for the party.
10. Do you think my jeans (is / are) out of style?