A.9000m3/h B.9900m3/h C.11000m3/h D.12000m3/h
A.40000m3/h,2000Pa B.20000m3/h,4000Pa C.40000m3/h,4000pa D.20000m3/h,2000Pa
A.24000m3/h B.36000m3/h C.48000m3/h D.72000m3/h