首页 > 建筑工程 > 八大员 > 施工员 > 水利 > 导流明渠的进出口与上下游围堰之间一般要保持()的距离。

导流明渠的进出口与上下游围堰之间一般要保持()的距离。

A.30~50m
B.50~100m
C.100~150m
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正确答案: B
答案分析:
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