![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
某住宅小区,总占地面积为120000㎡,其中混凝土道路占地面积为3600㎡,绿地面积为24000㎡,其余为住宅的占地。若住宅屋面均采用硬顶,则小区的雨水流量径流系数应为下列哪项()
A.0.750
B.0.847
C.0.857
D.0
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
B、0.847
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.0.750
B.0.847
C.0.857
D.0
B、0.847
A.2年
B.3年
C.4年
D.5年
A.55302.5
B.65002.5
C.13812.5
D.15502
A.37.5%
B.50%
C.66.6%
D.20%
A.84%
B.89%
C.94%
D.99.2%
A.15.00%
B.20.00%
C.35.00%
D.52.63%
A.21.31%
B.34.14%
C.37.50%
D.60.09%
A.5.00
B.7.38
C.11.33
D.11