A.220
B.200
C.180
D.150
A.220
B.200
C.180
D.150
A.防止排水不畅和积水风险
B.美观要求
C.节约材料
D.增加建筑成本
A.820L/s
B.1230L/s
C.1230L/s
D.615L/s
A.1328L/s
B.1494L/s
C.1560L/s
D.1660L/s
A.760L/s
B.760L/s
C.1140L/s
D.380L/s
A.615L/s
B.684L/s
C.615L/s
D.750L/s
A.增加一倍
B.减少一半
C.保持不变
D.增加一半
A.10-20米
B.30-50米
C.60-80米
D.90-110米
A.62.4
B.6.24
C.132.8
D.0.624