试题与答案

引起电力系统大扰动的主要原因有()。 A.负荷的变换 B.切除或投入系统的主要元件

题型:单项选择题

题目:

引起电力系统大扰动的主要原因有()。

A.负荷的变换

B.切除或投入系统的主要元件

C.电力系统的短路故障

D.以上都正确

答案:

参考答案:D

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