单项选择题
A.more sealing water is needed B.the cover clamp needs tightening C.the purifier has a bad vibration when started D.water is discharged from the overflow line
If fuel oil were being discharged from the waster outle...
单项选择题If fuel oil were being discharged from the waster outlet of a fuel oil disk type centrifuge, operated as separator, you should（）
A.remove the discharge ring B.re-prime the purifier C.the centrifuge to its proper speed D.install an additional discharge ring
One engine manufacturer recommends heavy fuel oil shoul...
单项选择题One engine manufacturer recommends heavy fuel oil should not be heated above 80℃ to 95℃ (176 ℉ TO 203℉) before purificationThis upper limit should be observed to ensure against（）
A.flattening of the bowl neoprene O-rings B.operation within the explosive rang of the fuel C.excessive purifier operating pressures D.excessive oil viscosity
Which of the substances listed is satisfactorily remove...
单项选择题Which of the substances listed is satisfactorily removed from the fuel by a centrifugal oil purifier?（）
A.Carbon particles B.Lube oil C.Gasoline D.Diesel fuel
