單項(xiàng)選擇題Diesel engine air start system check valves are opened by ()

A.an air start cam
B.cylinder compression pressure
C.starting air pressure
D.valve springs


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1.單項(xiàng)選擇題The cetane rating of diesel fuel is an indication of the ()

A.ignition quality of the fuel
B.calorific value of the fuel
C.flash point of the fuel
D.rate of fuel consumption

2.單項(xiàng)選擇題The condensers located in various stages of a flash evaporator are cooled by()

A.distillate
B.seawater
C.brine
D.air

3.單項(xiàng)選擇題Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?()

A.Impeller
B.Compressor
C.After-cooler
D.Exhaust differ

5.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?()

A.Speed limiting governor
B.Over-speed governor
C.Over-speed trip
D.Over-speed relay

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

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The cetane rating of diesel fuel is an indication of the ()

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

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The shipboard oil pollution emergency plan will be invalid after ()

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

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

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Flame failure in an automatically fired auxiliary boiler can from a/an ()

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