题目内容：
CRD法是在CD工法基础上增设（ ），即所谓的交叉中隔壁法。
A．临时仰拱 B．超前小导管
C．管棚
D．钢拱架
参考答案：
答案解析：
单选题：CRD法是在CD工法基础上增设（ ），即所谓的交叉中隔壁法。
- 题目分类：市政公用工程
- 题目类型：单选题
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B．超前小导管
C．管棚
D．钢拱架
B．超前小导管
C．管棚
D．钢拱架
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