题目内容：
泥浆护壁成孔灌注桩施工期间护筒内的泥浆应高出地下水位（ ）以上。
A．0.2m B．0.5m
C．0.8m
D．1.0m
参考答案：
答案解析：
单选题：泥浆护壁成孔灌注桩施工期间护筒内的泥浆应高出地下水位（ ）以上。
- 题目分类：矿业工程
- 题目类型：单选题
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B．0.5m
C．0.8m
D．1.0m
B．0.5m
C．0.8m
D．1.0m
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