The engine will fail to start unless （）.
A . the pressure of the starting air is high enough
B . there is enough air in the air reservoirs
C . the air is supplied into the cylinders in the appropriate sequence
D . all of the above
相似题目
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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 plug
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A diesel engine fails to start because of water in the fuelIn order to start the engine, you should （）?
A . turn engine with jacking gear
B . drain filters and strainers and bleed off water at each injection pump
C . use ether to start the engine with blow-down valves open
D . blow through the cylinders and fuel lines with a drying agent
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Cooling the intake air supplied to a diesel engine will （）.
A . reduce mean effective pressure
B . decrease average compression pressure
C . decrease air charge density
D . increase power output
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Loss of lubricating oil pressure to the main propulsion diesel engine will actuate a/an （）.
A . overspeed trip
B . audible/visual alarm
C . the ships/boats general alarm
D . reserve oil storage tank
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If the diesel engine fuel injection timing is changed to delay the start of injection until the pistons are at top dead center, the engine will（）
A . backfire through the air intakes
B . develop less power under load
C . have high firing pressures
D . lift its cylinder relief valve
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If a diesel engine fails to start，one of the likely causes is （）
A . low compression temperature
B . low ambient air pressure
C . high lube oil pump pressure
D . high fuel oil booster pump pressure
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Increasing the load on an engine equipped with a constant speed mechanical governor, will cause the engine speed to initially （）.
A . increase
B . decrease
C . fluctuate
D . remain constant
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When using a mksysb and base media to clone a system， which of the following will cause the installation to fail（）
A . mksysb made on a single processor machine but is being installed on a multiple processor machine， no editing of the image.data file
B . mksysb made on machine with mirrored rootvg and new machine only has one disk in rootvg， no editing of the image.data file
C . mksysb made on a machine with 32GB of RAM but being installed on a machine with only 8GB of RAM
D . mksysb made on a machine with virtual Ethernet adapter but being installed on a machine which only has a physical Ethernet adapter
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When a ship is entering to shallow water, ship resistance will be increased and the speed of main engine reduced.Due to the function of the governor, the main engine will（）
A . reduce fuel feeding
B . increase fuel feeding
C . keep original fuel feeding
D . be overspeed
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The drive motor will have a brake arranged to fail-safe, ieit will （） the load if power fails or machine is stopped.
A . lift
B . put
C . take
D . hold
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When attempting to start a main propulsion diesel engine, the engine, the engine turns at the proper speed but will not startYou should check the（）
A . starting air pressure
B . scavenge air pressure
C . over-speed trip
D . banjo oiler line
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If the turbocharger of a four-stroke/cycle diesel engine fails to operate, which of the following statements best describes the probable effect?（）
A . Intake manifold pressure will be high
B . Intake manifold pressure will be unaffected
C . Exhaust temperatures will be high
D . Exhaust temperatures will be low
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After changing out the fuel filters the diesel engine fails to restart, the most probable cause for this condition is a/an（）.
A . low compression
B . air-bound fuel system
C . improper spark
D . change in viscosity
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Worn main bearing will cause the compression ratio of an auxiliary diesel engine to（）
A . increase
B . decrease
C . remain the same
D . increase on compression decrease on expansio
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Excessive valve lash in an auxiliary diesel engine will cause the valves to open（）
A . later and close sooner
B . sooner and close later
C . sooner and close sooner
D . later and close later
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According to the Robinson Graph, suddenly astern maneuvering of main engine during navigating will cause（）
A . rapid reduction of ship’s friction force
B . shaft system over mechanical load
C . sharp growth of the torque of diesel engine
D . propeller torque change along J=0 curve
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At least （） cylinders in four-stroke engine will be configured to ensure that the engine can be started with the crankshaft at whatever position.
A . 6
B . 2
C . 12
D . 8
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The bilge system has been performing well; however, the aft starboard engine room bilgewell suddenly fails to be pumped outWhich of the following should be done first to determine the cause?（）
A、Open the bilge pump for inspection
B、Remove each of the manifold valves
C、Remove only the manifold valve to the affected bilge-well
D、Attempt to pump out another bilge well to determine if the entire system is affected.
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（） in what position the engine stops there will always be at least one of the cylinders with its starting air valve open to admit compressed air to start the engine.
A . Because
B . Owing to
C . For
D . No matter
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If a diesel engine driving a generator turns over freely but fails to fire properly, the cause could be （）
A . excessive compression pressure
B . air in the fuel lines
C . high fuel pressure
D . excessive load
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With respect to diesel fuel, the ease with which a cold engine will start is dependent upon the（）
A . ignition quality of the fuel
B . high heating value of the fuel
C . amount of carbon residue after combustion
D . internal flow resistance in the injector
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Heat energy is a source of power, but （） will cause damage to the engine.
A . excessive heat
B . insufficient heat
C . effective cooling
D . high output
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The drive motor will have a brake arranged to fail-safe, i√eit will （） the load if power fails or machine is stopped.
A . cast
B . put
C . hold
D . let out
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If you fail to say "thank you" to the receptionists, they will have negative impressions of you.
A．Y
B．N
C．NG
