超星 - 3.2课后测验 - 查题吧

判断题

三相四线制电源中，中性线不可以装开关。

A. 对
B. 错

判断题

中线的作用是将负载的中点与电源的中点相连，从而保证负载的三相电压对称。

A. 对
B. 错

判断题

三相负载作星形联接时，线电流等于相电流。

A. 对
B. 错

判断题

三相对称电路是指三相电源对称的电路。

A. 对
B. 错

判断题

三相不对称负载越接近对称，中线上通过的电流就越大。

A. 对
B. 错

单选题

We need one year work experience_____ this field.

A. to
B. on
C. at
D. in

单选题

I don't mind not _____the marketing job.

A. getting
B. got
C. gets
D. get

单选题

Happy birthday, Jack!---____!

A. The same to you
B. Thank you
C. Good luck
D. Have a nice time

单选题

--- Amazing! I've managed to finish the project by myself .--- _____I told you it was easy.

A. With pleasure.
B. Guess what?
C. There you are
D. It doesn't matter

单选题

---I’m going to the picnic this weekend.---____

A. Can you fish ?
B. Have a good time.
C. No,I’m too busy.
Don’t give up now.

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