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当前学科：注册给水排水工程师
题目：
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下列关于地下水取水构筑物施工方式的叙述，正确的是（）。
A
管径通常用机械开凿
B
管井通常采用大开槽施工
C
渗渠通常采用大开槽施工
D
渗渠通常采用顶管施工
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