單項(xiàng)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


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1.單項(xiàng)選擇題

The exhaust valve opens before bottom dead center in a four stroke engine to()
Ⅰ.allow for blow down
Ⅱ.Reduce pumping losses

A.Ⅰ only
B.Ⅱ only
C.both Ⅰ and Ⅱ
D.neither Ⅰ nor Ⅱ

2.單項(xiàng)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

3.單項(xiàng)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

4.單項(xiàng)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

5.單項(xiàng)選擇題Which of the diesel engine cylinder liners listed has internal cooling water passages?()

A.Internally finned liner
B.Externally finned liner
C.Wet liner
D.Integral water-jacket liner

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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

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The additional mark ()in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.

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()connectors hold best if a wire is accidentally pulled or a connection becomes loose.

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

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

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

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

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If two A.C.generators are to be operated in parallel, the load is distributed evenly by()

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

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Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?()

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