單項(xiàng)選擇題Heat damage to fuel injection nozzles on small high-speed diesel engines, can be prevented by()

A.employing fuel oil as a cooling medium
B.preventing hard carbon deposit on nozzle tips
C.avoiding fuel oil temperature exceeding builder’s specification
D.ensuring good metallic contact between nozzles and cylinder heads


您可能感興趣的試卷

你可能感興趣的試題

1.單項(xiàng)選擇題One of the advantages in the use of a dry liner over a wet liner is()

A.it is fitted with neoprene O-ring seals
B.the honing process makes it easier to maintain the desired oil film
C.there is likelihood of water leaking into the combustion space
D.it fits more loosely due to a decrease in heat transfer through the composite wall

2.單項(xiàng)選擇題One characteristic of a pulse type turbo-charging system is()

A.high average exhaust manifold
B.greatly fluctuating inlet manifold pressure
C.constant exhaust manifold pressure
D.multiple exhaust pipes to the turbocharger

3.單項(xiàng)選擇題One advantage of dry cylinder liners used in a diesel engine is the()

A.lower thermal expansion rates than wet liners
B.greater heat transfer rate than wet liners
C.greater wear resistance than wet liners
D.procedure to replace dry liners is simpler than for wet liners

4.單項(xiàng)選擇題Intake air flow from a diesel engine turbocharger is directly proportional to engine()

A.exhaust gas pressure
B.exhaust gas temperature
C.speed
D.load

5.單項(xiàng)選擇題Which of the listed conditions can be used to determine if lube oil has been diluted by fuel? ()

A.Viscosity is decreased
B.Octane number is altered
C.Pump speed is decreased
D.Blower’s speed is decreased

最新試題

“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a()

題型:單項(xiàng)選擇題

Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the()

題型:單項(xiàng)選擇題

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

題型:單項(xiàng)選擇題

To proceed to the assistance of a ship in distress is()

題型:單項(xiàng)選擇題

Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?()

題型:單項(xiàng)選擇題

For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?()

題型:單項(xiàng)選擇題

Which one is NOT the ‘clear grounds’ for a more detailed inspection?()

題型:單項(xiàng)選擇題

To shut down a diesel engine after it exceeds the set maximum speed,which type of device listed should be used?()

題型:單項(xiàng)選擇題

The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated()

題型:單項(xiàng)選擇題

The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the()

題型:單項(xiàng)選擇題