题目内容：
圆管涵施工的主要工序包括（ ）。
A．管座基础施工 B．防水层施工
C．基坑开挖
D．安装圆管
E．碾压
参考答案：
答案解析：
多选题：圆管涵施工的主要工序包括（ ）。
- 题目分类：公路工程管理与实务
- 题目类型：多选题
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B．防水层施工
C．基坑开挖
D．安装圆管
E．碾压
B．防水层施工
C．基坑开挖
D．安装圆管
E．碾压
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