单选题6.18

低压绝缘线路每相过引线、引下线与邻相的过引线、引下线之间的净空距离不应小于（）mm。

发布于 2021-02-22 21:09:24

【单选题】
A 50$
B $ 100$
C $ 150$
D 200

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风铃? 2023-02-22

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yingang3344

这家伙很懒，什么也没写！

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