某水闸启闭机房钢觞混凝土悬臂梁跨度为1.5m,其底模拆除时,混凝土的强
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A.50%
A.50%
A.50%
B.70%
B.75%
B.75%
C.80%
C.80%
C.80%
D.90%
D.90%
D.90%
参考答案:
A.50%
A.50%
A.50%
B.70%
B.75%
B.75%
C.80%
C.80%
C.80%
D.90%
D.90%
D.90%
参考答案: