一般地，电力系统的运行电压在正常情况下不允许超过额定电压。_爱下问搜题

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问题判断题

一般地，电力系统的运行电压在正常情况下不允许超过额定电压。

答案

参考答案：错

选择题

I have to see the doctor because I _____ a lot lately.

A. have been coughing
B. had coughed
C. coughed
D. cough

名词解释

古埃及太阳历