题目内容 (请给出正确答案)
提问人:网友w*****2 发布时间:2023年8月5日 09:36
[单项选择题]

()多用于敷设在干燥场所的电线、电缆的保护管,可明敷或暗敷。

A.厚壁钢管

B.薄壁钢管

C.金属波纹管

D.普利卡金属套管

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