[单选题]低压泵扬程低于()MpA。A . 0.1B . 0.2C . 0.3D . 0.4
[单选题]按扬程分,扬程低于()的离心泵属于低压泵。A .60mB .40mC .20mD .10m
[单选题]中低压泵的中压扬程为()MPa。A .1B .2C .3D .4
[单选题]中低压泵的中压扬程为( )MPa。A.1B.2C.3D.4
[单选题]低压消防泵扬程不大于()MPa。A . 1.0B . 1.4C . 1.6D . 2.2
[单选题]扬程在()米以下水柱的离心泵为低压泵。A .400B .300C .200D .100
[单选题]高低压消防泵高压扬程可达()Mpa。A .2B .3C .4D .6
[单选题]中低压泵水罐消防车低压扬程为(),流量(),中压扬程为2.0MPa,流量20/s。A .扬程为1.2MPa,流量40/sB .扬程为1.0MPa,流量45/sC .扬程为1.1MPa,流量40/sD .扬程为1.0MPa,流量40/s
[单选题]中低压泵水罐消防车低压扬程为,流量,中压扬程为2.0MPa,流量20/s。( )A.扬程为1.2MPa,流量40/sB.扬程为1.0MPa,流量45/sC.扬程为1.1MPa,流量40/sD.扬程为1.0MPa,流量40/s
[填空题] 压力低于()米水柱的泵为低压泵。