只要电源（），在开关电气设备的动、静触头分离瞬间，触头间就会出现电弧。 -题库考试答案搜索网

只要电源（），在开关电气设备的动、静触头分离瞬间，触头间就会出现电弧。

单选题

2021-07-19 02:25

A、电压大于20~30V，电流大于80~100mA
B、电压大于10~20V，电流大于80~100mA
C、电压大于10~20V，电流大于50~80mA
D、电压大于20~30V，电流大于50~80mA

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正确答案

B

试题解析

B

标签：新能源科学与工程专升本发电工程 2020年第二学期期末考试

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