A.0.3%
B.0.4%
C.0.5%
D.0.6%
A.0.3%
B.0.4%
C.0.5%
D.0.6%
A.0.5
B.1.0
C.2.0
D.3.0
A.0.5
B.1.0
C.1.5
D.2.0
A.2.0m
B.2.5m
C.3.5m
D.4.0m
A.2.0m
B.2.5m
C.3.5m
D.4.0m
A.0.5
B.1
C.2
D.3
A.0.3%
B.0.5%
C.1.0%
D.2.0%
A.0.1%
B.0.2%
C.0.3%
D.0.4%
A.渗水坑
B.边沟、截水沟和集水井
C.地下排水系统
D.雨水泵站