在电力系统正常状况下，电网装机容量在300万KW及以上的，对供电_爱下问搜题

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问题单项选择题

在电力系统正常状况下，电网装机容量在300万KW及以上的，对供电频率的允许偏差为（）。

A.±0.2Hz

B.±0.1Hz

C.±0.5Hz

D.0.1Hz

答案

参考答案：A

填空题

A: Good afternoon, Doctor Huang.

B: Good afternoon, young man. 56

A: I have a bad cold. I cough now and then.

B: 57

A: For two days. And I’m feeling terrible now.

B: 58 Oh, you have a fever, too.

A: Is it serious?

B: 59 You just need some medicine.

A: How often should I take the medicine?

B: Three times a day. 60

A: Thanks a lot. Bye!

判断题

猪喘气病的病原体是一种支原体。