土明沟施工时,沟槽开挖宜( ),以利排水。A.从下游往上游进行B.从上游往下游进行C.从中间向两边进行D.从两边向中间进行

作者: rantiku 人气: - 评论: 0
问题 土明沟施工时,沟槽开挖宜( ),以利排水。
选项 A.从下游往上游进行 B.从上游往下游进行 C.从中间向两边进行 D.从两边向中间进行
答案 C
解析

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