A.<img src="uploads/images/tikuxx/14161816454.jpg">
B.<img src="uploads/images/tikuxx/14161815008.jpg">
C.<img src="uploads/images/tikuxx/14161814936.jpg">
D.<img src="uploads/images/tikuxx/14161816092.jpg">
A.坝基础位置
B.坝上游侧
C.坝中心线位置
D.坝下游侧
A.静定结构
B.瞬变结构
C.可变结构
D.超静定结构
A.二
B.三
C.四
D.五
A.20
B.30
C.50
D.100