A.0.5-1m/sB.1-1.5m/sC.3-4m/sD.6-7m/s
A.0.5m/sB.0.25m/sC.1m/sD.0.5~1.0m/s
A.0.5MPaB.1.3MPaC.3.0MPaD.3.4MPa