A.be clear
B.be blue
C.be light green
D.show bubbles
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A.temperature in the space being cooled
B.liquid refrigerant pressure at the solenoid valve
C.pressure drop across the evaporator coils
D.refrigerant gas superheat at the coil outlet
A.remains the same
B.is reduced
C.is increased
D.is eliminated
A.corrosion on the gears
B.excessive gear speed
C.dirt in the oil
D.misalignment of the gears
A.maintain alignment when the ship’s hull is working in heavy seas
B.ensure engine vibrations correspond to the natural frequency of the hull
C.permit the engine to expand away from the driven equipment as the engine heats up and expands
D.maintain engine thrust bearing clearances
A.must churn the oil in the sump
B.is connected to the propeller shaft
C.is driven at the highest RPM
D.compensates for alignment variations between the engine and pinion gear
A.reduce load
B.check your exhaust
C.adjust cooling water temperature
D.increase lube oil flow
A.Lubrication to the defective cylinder should be increased
B.Cooling water temperature to the engine should be increased
C.Only the turbocharger speed should be reduced
D.Engine speed should be reduced
A.incorrect injection timing
B.low exhaust back pressure
C.floating exhaust valves
D.excessive cranking speed
A.electrical overload
B.surging at governed RPM
C.loose engine mounting bolts
D.coolant leaking into the cylinder
A.check the air filter for obstruction
B.check for an exhaust leak
C.check the exhaust temperature
D.secure the engine
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If two A.C.generators are to be operated in parallel, the load is distributed evenly by()
Diesel engine air start system check valves are opened by ()
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated()
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the()
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a()
Under MARPOL Code the ship to which it applies has to carry ()
Flame failure in an automatically fired auxiliary boiler can from a/an ()
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a()
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
() is not installed on the main switchboar.