通用知识:有触点电器的触头工作状态其关键问题是触头的()。A.机械振动 B.发热 C.熄灭电弧 D.电隔离

作者: tihaiku 人气: - 评论: 0
问题 通用知识:有触点电器的触头工作状态其关键问题是触头的()。
选项 A.机械振动 B.发热 C.熄灭电弧 D.电隔离
答案 B
解析 T-89

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