题目内容：
混凝土强度等级越高，其应力应变曲线的下降段？
A.越陡峭
B.越平缓
C.两者无关
D.不确定
参考答案：
选择题：混凝土强度等级越高，其应力应变曲线的下降段？
- 题目分类：慕课
- 题目类型：选择题
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