试题与答案

光缆线路穿越允许开挖路面的公路或乡村大道时,应采用()保护。 A.钢管 B.双壁波纹

题型:多项选择题

题目:

光缆线路穿越允许开挖路面的公路或乡村大道时,应采用()保护。

A.钢管

B.双壁波纹管

C.硅芯管

D.实壁管

答案:

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