单选题If found oil when we open low oil level plug of separator, it indicates （）A the separator is overloadB the monitor equipment of separator failsC the discharge pump of separator can not workD the temperature of oil water is low

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.Low level is monitored on the drain tank and header tank.

B.If there is high differential the filters pressure across the circulating

pumps is alarmed

C.The lubricating oil purifier cannot take oil from the drain tank

D.If the sea water pressure falls, this also operates an alarm

When the ships is going to enter into the harbor

A.change from heavy fuel oil to diesel oil for main engine

B.pumping out bilge water

C.change sea chest form high level one to lower level one

D.test emergency generator

Overheating of the hydraulic fluid in an electro-hydraulic anchor windlass can result from a/an( ).

A.overload on the pump motor

B.low fluid level in the reservoir

C.low fluid viscosity around the shaft seal

D.high oil level in the sump