问题
单项选择题
有功功率过剩时会使（）。
A.电压升高；
B.频率升高；
C.频率和电压升高；
D.不变。
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
有功功率过剩时会使（）。
A.电压升高；
B.频率升高；
C.频率和电压升高；
D.不变。
参考答案：C
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