單項選擇題A dry-type exhaust muffler clogged with soot, will cause()

A.low exhaust temperature
B.loss of engine power
C.burned intake valves
D.engine racing


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1.單項選擇題An operating turbocharged diesel engine that suddenly loses power, is due to a/an()

A.restricted turbocharger air intake
B.oil leak into the turbocharger
C.dribbling injector
D.low fuel viscosity

3.單項選擇題Which of the turbo-charging systems listed operates with the least average back pressure in the exhaust manifold?()

A.Constant volume
B.Constant pressure
C.Pulse pressure
D.Radial flow

4.單項選擇題Which of the following conditions indicates the dilution of diesel engine lube oil by fuel oil?()

A.Water discharging from the water outlet of the lube oil purifier
B.Fuel oil discharging from the water outlet of the lube oil purifier
C.Lube oil discharging from the water outlet of the lube oil purifier
D.A change in the lube oil viscosity

5.單項選擇題If a single cylinder relief valve on a diesel engine lists frequently while the engine is running, the cause may be an ()

A.excessively late injection timing for each cylinder
B.incorrectly adjusted intake valve timing
C.incorrectly adjusted fuel injector
D.incorrectly adjusted intake valve clearance

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A purge recovery system is used in a centrifugal air conditioning or refrigeration system to ()

題型:單項選擇題

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:單項選擇題

One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is()

題型:單項選擇題

Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?()

題型:單項選擇題

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

題型:單項選擇題

As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?()

題型:單項選擇題

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

題型:單項選擇題

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

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The ISPS Code consists of a mandatory section-Part A, which shows()

題型:單項選擇題

During the diesel engine running, the water level of F.W expansion tank should normally kept in the () level of glass tube.

題型:單項選擇題