單項(xiàng)選擇題The major cause of trouble in a mechanical-hydraulic governor is contamination of the hydraulic fluid by ()

A.dirt
B.fuel oil
C.governor cooling water
D.fuel oil tars


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2.單項(xiàng)選擇題A faulty thermostatic bypass valve, in a diesel engine cooling system, can result in ()

A.excessive time required for warming-up
B.excessive freshwater corrosion
C.scale formation on the saltwater side
D.saltwater mixing with the freshwater

3.單項(xiàng)選擇題Movement of the pump control rack in a fuel injection system using individual plunger-type pumps ()

A.changes the position of the fuel inlet ports
B.changes the length of the pump stroke
C.varies the quantity of fuel delivered
D.varies the compression of the delivery valve spring

4.單項(xiàng)選擇題During extremely cold weather, while starting an engine, it turns too slowly and fails to startThis problem is most likely the result of ()

A.high fuel oil viscosity
B.low fuel oil temperature
C.high lube oil viscosity
D.energized glow plugs

5.單項(xiàng)選擇題Which of the listed diesel engine operating conditions should be checked immediately after any diesel engine is started?()

A.Exhaust temperature
B.Lube oil level
C.Lube oil pressure
D.Water level in the expansion tank

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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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Cold weather starting of a diesel engine may be made easier by()

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

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The condensers located in various stages of a flash evaporator are cooled by()

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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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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()

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

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