A centrifugal fuel oil purifier should be shut down if （）

If you suspect a diesel engine is misfiring due to air leakage into the fuel system, you should begin looking for the leak at the

A.fuel line connections to the cylinder injection valves

B.gasket surfaces of the fuel oil filters

C.discharge fittings of the fuel injector pumps

D.suction side of the fuel oil transfer pump

Which factor determines the ring dam size for a fuel oil, tubular bowl type, centrifugal purifier?

A.The viscosity of the fuel.

B.The quantity of water to be removed from the fuel.

C.The specific gravity of the fuel.

D.The quantity of dirt to be removed from the fuel.

A.It can be applied to separate two liquids

B.It cannot separate solids which contaminated in the oil.

C.It consists of purifier and clarifier

D.The centrifuge arranged to separate two liquids is known as purifier

When an auxiliary boiler is panting and emitting(发出) black smoke, you should______.

A.increase the fuel oil temperature

B.decrease the fuel oil temperature

C.decrease the fuel oil supply pressure

D.increase the air supply

The main propulsion diesel continues running after you try to shut down. You should now attempt to .

A.stop the fuel oil booster pump

B.engage the jacking gear

C.secure the lube oil pump

D.shut off the fuel at the settling tank

If the bowl of a disk type centrifugal purifier when operated as a separator is not primed, the

A.oil has a tendency to emulsify in the bowl

B.purifier will act as a clarifier at the discharge ring

C.oil will be lost through the water discharge ports

D.oil solids will be deposited only at the intermediate top disk

A.viscosity a heated to reduce its

B.cooled to reduce its temperature

C.heated to reduce its density

D.heated to reduce its gravity