为保证直埋长途干线光缆线路的安全,辐射地段为( )时光缆埋深要求≥1.2m。A.普通土B.砂砾土C.硬土D.市区人行道E.村镇

作者: rantiku 人气: - 评论: 0
问题 为保证直埋长途干线光缆线路的安全,辐射地段为( )时光缆埋深要求≥1.2m。
选项 A.普通土 B.砂砾土 C.硬土 D.市区人行道 E.村镇
答案 AE
解析

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