题目内容：
桥梁通常由（ ）五大部分组成。
A．支座系统 B．护坡
C．墩台基础
D．桥跨结构
E．桩
参考答案：
答案解析：
多选题：桥梁通常由（ ）五大部分组成。
- 题目分类：市政公用工程管理与实务
- 题目类型：多选题
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B．护坡
C．墩台基础
D．桥跨结构
E．桩
B．护坡
C．墩台基础
D．桥跨结构
E．桩
凡是多孔跨径的全长不到（ ）m和单孔跨径不到（ ）m的泄水结构物，均称为涵洞。
凡是多孔跨径的全长不到（ ）m和单孔跨径不到（ ）m的泄水结构物，均称为涵洞。A．8，6 B．7，5 C．8，5 D．8，7
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