A.0.2%
B.0.3%
C.0.35%
D.0.4%
A.0.2%
B.0.3%
C.0.35%
D.0.4%
A.0.2%
B.0.3%
C.0.4%
D.0.5%
A.为了减少建设成本
B.为了美观
C.为了确保排水通畅
D.为了节约空间
A.0.5
B.1.0
C.2.0
D.3.0
A.75
B.80
C.85
D.90
A.渗水坑
B.边沟
C.截水沟
D.集水井
A.0.1%
B.0.2%
C.0.3%
D.0.4%
A.0.5
B.1.0
C.1.5
D.2.0
A.管道、雨水口
B.截水沟、急流槽
C.排水沟、截水沟
D.边沟、排水沟