对于Y／Y接法电压互感器所接仪表能够测量（）。A、相电压； B、

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问题单项选择题

对于Y／Y接法电压互感器所接仪表能够测量（）。

A、相电压；

B、线电压；

C、零序电压；

D、当高压侧B相熔断器熔断时其所接电压表指示电压Uab为正常值的1／2。

答案

参考答案：B

补全对话，情景问答

根据对话内容填空，补全对话。

A: Hi, John! There will be a cycling race in our city in the afternoon.

B: 1____ Will you take part in?

A: Of course. Can you go with me?

B: 2____

A: Why?

B: Because my parents will take me to Beijing tomorrow. I must go home to make my things ready.

A: 3____ How I wish you could join us!

B: 4____ But I will join you next time. I hope you have a nice trip.

A: Thank you.

B: When you ride a bike, you must be careful. I wish you 5 ____ and I'm sure you will win.

填空题

结核、恶性肿瘤在 ___________ 情况下，可以进行高频电疗。