单项选择题
A.{{*HTML*}}d<sub>u</sub> =7.0m;d<sub>w</sub> =6.0m B.{{*HTML*}}d<sub>w</sub> =7.5m;d<sub>w</sub> =3.5m C.{{*HTML*}}d<sub>u</sub> =9.0m;d<sub>w</sub> =5.0m D.{{*HTML*}}d<sub>u</sub> =3.0m;d<sub>w</sub> =7.5m
A.7.1% B.8.0% C.8.7% D.9.2%
A.342m3/d B.380m3/d C.425m3/d D.453m3/d