试题与答案

拉线开关距地面一般为2.2~2.8m,距门框为()A、100mm~150mmB、15

题型:单项选择题

题目:

拉线开关距地面一般为2.2~2.8m,距门框为()

A、100mm~150mm

B、150mm~200mm

C、250mm~300mm

D、300~350mm

答案:

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