单项选择题
A.1900×1300mm B.1950×1300mm C.1925×1350mm D.1910×1320mm
A.2000m3/h和5500m3/h B.5500m3/h和2000m3/h C.2500m3/h和5000m3/h D.5000m3/h和2500m3/h
A.11F1 B.11F2 C.11F3 D.11F4