单项选择题
A.5.82 W/mm2,0.68 B.6.01 W/mm2,0.68 C.6.01 W/mm2,0.82 D.5.82 w/mm2,0.82
A.5~6 B.4~5 C.3~4 D.2~3
A.22 000 m3/h B.23 654 m3/h C.24 500 m3/h D.28 098 m3/h