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[单选题]
某流域面积为500km2,多年平均流量为7.5m3/s,换算成多年平均径流深为()。
A.887mm
B.500mm
C.473mm
D.805mm
查看答案
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A.887mm
B.500mm
C.473mm
D.805mm
A.315.4mm
B.587.5mm
C.463.8mm
D.408.5mm
A.6397
B.5464
C.2214
D.1927
A.95200Pa
B.95175Pa
C.95225Pa
D.25Pa
A.低流量间断给氧
B.低流量,低浓度持续给氧
C.加压给氧
D.高流量,高浓度持续给氧
E.乙醇湿化给氧