试题与答案

少油断路器内的变压器油主要作用为()。A.绝缘 B.灭弧 C.润滑和防锈

题型:单项选择题

题目:

少油断路器内的变压器油主要作用为()。

A.绝缘

B.灭弧

C.润滑和防锈

答案:

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