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单选题
If it becomes necessary to cutout an individual cylinder of a large, low-speed, main propulsion diesel engine, the fuel to that cylinder should be secured and its （）
A
fuel pump should be removed and all connections blanked off
B
cylinder oil feed rate should be increased slightly above that used at normal sea speed
C
cylinder oil feed rate should be reduced
D
cylinder oil feed rate should be increased to the maximum flow capable of the metering pump
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If the scavenge fire is of a more major nature, if there is a risk of the fire extending or if the scavenge trunk is adjacent to the crankcase with risk of a hot spot developing it sometimes becomes necessary to_______the engineA.stopB.startC.speed upD.slow down
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If it becomes necessary for a stand-on vessel to take action to avoid collision，she shall NOT，if possible，().A.Decrease speedB.Increase speedC.Turn to port for a vessel on her own port sideD.Turn to starboard for a vessel on her own port side
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The main factor which determines the output of each cylinder is _____.A.the cylinder weightB.the cylinder boreC.the cylinder lengthD.the cylinder cover
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If it becomes necessary to pump bilges while a vessel is in port, which of the following procedures should be followed?A.Pump only if the discharge is led to a shore tank or bargeB.Pump only during the hours of darknessC.Pump only on the outgoing tideD.Pump only as much as is necessary
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A situation has occurred where it becomes necessary for you to be towed. What action should be taken to prevent your vessel from yawing? ______.A.Shift weight to the bowB.Shift weight to the center of the boatC.Shift weight to the sternD.Throw excess weight overboard
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单选题In a single acting, four-stroke/cycle diesel engine, the power impulse in an individual cylinder occurs （）A
once every crankshaft revolutionB
once every two crankshaft revolutionsC
once every piston strokeD
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单选题Fuel injection equipment must be kept in good condition, timed correctly, and the （）in each cylinder must also be carefully balanced so that individual cylinders are not overloaded.A
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单选题For a diesel engine, individual cylinder performance is commonly determined by exhaust gas（）A
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the cylinder linerB
the cylinder coverC
the cylinder jacketD
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单选题Diesel engine exhaust gas temperatures can be used to determine individual cylinder （）.A
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单选题Why does the author mention the book and magazine budgets of individual developers in Para 1?A
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To demonstrate that book and magazine budgets are important to software developers.C
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单选题Which of the following condition is likely to develop if the thermocouple element of a pyrometer becomes coated with excessive amounts of combustion by-products?（）A
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单选题The passage provides an answer to which of the following questions?A
What is the explanation for the phenomenon of bioluminescence in marine life?B
Does the phenomenon of plankton bioluminescence have any practical applications?C
Why do only certain specimens of marine life exhibit the phenomenon of bioluminescence?D
How does underwater bioluminescence differ from atmospheric bioluminescence?E
What are the steps that take place as an individual microorganism becomes bioluminescent?
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单选题The refrigeration compressor in a water cooled refrigeration system is short cycling on the high pressure cutout switch， One reason for this could be the （）.A
system is low on refrigerantB
high pressure cutout switch is improperly adjustedC
discharge valves are leaking slightlyD
discharge valves are leaking excessively
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单选题If it becomes necessary to pump bilges while a vessel is in port, which of the following procedures should be followed?（）A
Pump only if the discharge is led to a shore tank or bargeB
Pump only during the hours of darknessC
Pump only on the outgoing tideD
Pump only as much as is necessary
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单选题If the hydrostatic release mechanism for an inflatable liferaft is not periodically serviced and becomes inoperative，it will NOT（）.A
set the water lights on immersionB
release the dye-marker from the liferaftC
free the liferaft from the vesselD
break the seal on the carbon dioxide cylinder
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单选题It is very necessary that each cylinder （） before the charged air is compressed.A
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has been scavengedC
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was scavenged
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单选题It is very necessary that each cylinder （） before the charged air is compressed.A
is scavengedB
is atomized with fuel oilC
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单选题If the scavenge fire is of a more major nature, if there is a risk of the fire extending or if the scavenge trunk is adjacent to the crankcase with risk of a hot spot developing it sometimes becomes necessary to （）the engine.A
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单选题A faulty injection in one cylinder of an operating diesel engine can be located by （）A
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checking lube oil temperatureC
checking cam positionD
using a timing light
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once every crankshaft revolutionB
once every two crankshaft revolutionsC
once every piston strokeD
twice every piston stoke
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单选题A situation has occurred where it becomes necessary for you to be towed. What action should be taken to prevent your vessel from yawing?（）A
Shift weight to the bowB
Shift weight to the center of the boatC
Shift weight to the sternD
Throw excess weight overboard
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单选题In a refrigeration system, which of the following statements describes the actions occurring when a solenoid valves, used in conjunction with an unloader head is energized?（）A
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The solenoid valves directs high pressure gas to the underside of the unloading piston, causing it to rise and allowing the recirculating ports to be openedC
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The solenoid valve allows the refrigerant to pass from the suction chamber to the top of the unloader piston, causing the piston to lift and unload the cylinder
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单选题By “a well-oiled cog in the machinery” the author intends to render the idea that man is _____.A
a necessary part of the society though each individual’s function is negligibleB
working in complete harmony with the rest of the societyC
an unimportant part in comparison with the rest of the society, though functioning smoothlyD
a humble component of the society, especially when working smoothly
考题
单选题Which of the fuel injection systems listed uses a spring loaded differential spray needle valve and individual pump for each cylinder?（）A
Common-rail injectionB
Air injectionC
Jerk pump injectionD
Distribution injection
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单选题The cylinder covers and the liners are bolted together by means of （）.A
bolts welded into the cylinder headB
bolts welded into the cylinder framesC
studs screwed into the cylinder headD
studs screwed into the cylinder frames
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单选题If it becomes necessary for a stand-on vessel to take action to avoid collision，she shall NOT，if possible，（）A
decrease speedB
increase speedC
turn to port for a vessel on her own port sideD
turn to starboard for a vessel on her own port side
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