题目内容:
桥梁防水系统施工时,基层混凝土强度应达到设计强度的( )以上,方可进行防水层施工。当采用防水卷材时,基层混凝土表面的粗糙度应为( )
A.80%, 1.5~2. 0mm A.80%, 1.5~2. 0mm
A.80%, 1.5~2. 0mm
A.80%, 1.5~2. 0mm
A.80%, 1.5~2.0mm
A.80%, 1.5~2.0mm
B.75%, 1.5~2. 0mm
B.75%, 1.5~2. 0mm
B.75%, 1.5~2. 0mm
B.75%, 1.5~2. 0mm
B.75%, 1.5~2.0mm
B.75%, 1.5~2.0mm
C.70%, 1.5~2. 0mm
C.70%, 1.5~2. 0mm
C.70%, 1.5~2. 0mm
C.70%, 1.5~2. 0mm
C.70%, 1.5~2.0mm
C.70%, 1.5~2.0mm
D.80%, 0. 5~1. 0mm
D.80%, 0. 5~1. 0mm
D.80%, 0. 5~1. 0mm
D.80%, 0.5~1. 0mm
D.80%, 0.5~1.0mm
D.80%, 0.5~1.0mm
参考答案:
答案解析: