A pump’sdisplacementis0.006L/r.Whenitrunsat1200rpm,theoutputflowrateofpumpwillbe

A. 2L/min
B. 5L/min
C. 7.2L/min
D. noneoftheabove

Volumetricefficiencyistheratioof

A. theoreticalflowratetoactualflowrate
B. inputpowertooutputpower
C. outputpowertoinputpower
D. actualflowratetotheoreticalflowrate

Apump’sworkpressurep=10MPa,actualflowrateisQ=60L/min，thevolumetricefficiencyηv=0.9,andthemechanicalefficiencyηm=0.94.Calculate:1)Outputpowerofthepump;2)Inputpowerofthepump.（计算过程写在纸上，拍照后以图片上传）