题目内容：
堤岸防护工程一般可分为（ ）等几种。
A．平顺护岸 B．坝式护岸
C．墙式护岸
D．逆向护岸
E．顺向护岸
参考答案：
答案解析：
多选题：堤岸防护工程一般可分为（ ）等几种。
- 题目分类：水利水电工程
- 题目类型：多选题
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B．坝式护岸
C．墙式护岸
D．逆向护岸
E．顺向护岸
B．坝式护岸
C．墙式护岸
D．逆向护岸
E．顺向护岸
对于建筑物的外部混凝土相对压实度不得小于（ ）。
对于建筑物的外部混凝土相对压实度不得小于（ ）。A．95% B．96% C．97% D．98%
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