A.Lubrication systems using engine driven lube oil pumps do not require any additional independent arrangement when such arrangements have been proven reliable
B.The use of engine driven pre-lube pumps is permitted on vessels with propulsion systems developing less than 500 shaft horsepower
C.When forced lubrication is used for propulsion engines, one independently driven stand-by pumps is to be provided in addition to the necessary pumps for normal operation
D.Lubrication systems where two oil coolers are fitted require a minimum of two temperature control devices which may be actuated by similar sensors
您可能感興趣的試卷
你可能感興趣的試題
A.a broken shaft on the freshwater pump
B.an excessive accumulation of scale exchanger
C.an incorrect thermostatic element operating range
D.lube oil in the cooling water
A.varying the pump discharge pressure
B.varying the pump return pressure
C.rotation of the pump plunger
D.rotation of the pump barrel
A.accumulator spring compressor
B.balance piston
C.compensating needle valve
D.proportional piston
A.speed droop
B.compensation
C.idle speed setting
D.load limit control
A.Large misalignments can be tolerated between the shaft and engine coupling
B.Slip is held to a minimum when reversing shaft rotation
C.Engine torsion vibrations to the driven shaft are eliminated
D.It aids in maintaining power factor
最新試題
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
The treatment of the fuel oils involves storage, heating, filtering and（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
Using a file without a handle may result in （）
The cetane rating of diesel fuel is an indication of the （）
When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
If separating effect is not good, which measure should be taken （）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）