单项选择题
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
A.72.13%,24.83% B.72.15%,30.06% C.52.89%,27.85% D.52.89%,30.06%