网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
Such an engine frame helps （） the engine and so protect the bearings from the deformation forces transmitted via the ships double bottom.
A
to stiffen
B
to soften
C
to loosen
D
to wear
参考答案
参考解析
解析：
暂无解析
更多 “单选题Such an engine frame helps （） the engine and so protect the bearings from the deformation forces transmitted via the ships double bottom.A to stiffenB to softenC to loosenD to wear” 相关考题
考题
---Ring off engine! ---Ring off engine! _________________A.Finished with engine!B.Engine rung off!C.Engine stand by!D.Got it.
考题
"Stand by an engine" meansA."prepare to stop the engine"B."assemble an engine on its bedplate"C."make an engine ready for starting"D."dismantle an engine"
考题
The frame needs to be strong enough to support the engine.A: structureB: bottomC: surfaceD: top
考题
---（）! ---Engine dead slow astern! A、Dead slow asternB、Engine slow asternC、Engine half asternD、Ready
考题
---Stand by engine! ---Stand by engine!（）A、Engine stand by!B、Finished with engine!C、Engine by stand!D、OK.
考题
---Ring off engine! ---Ring off engine! （） A、Finished with engine!B、Engine rung off!C、Engine stand by!D、Got it.
考题
---Finished with engine! ---Reply: Finished with engine! ---Report: （）.A、Finished with engineB、Engine finishedC、\D、Well
考题
Which statement about the DVS engine is true？（）A、the DVS engine can useWebroot and McAfee scanning in parallelB、the DVS engine generates the WBRSC、the DVS engine never inspects the client HTTP requestD、the DVS engine is only used for Layer 4 traffic monitoring
考题
单选题Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）A
ImpellerB
CompressorC
After-coolerD
Exhaust differ
考题
单选题It is necessary to （） cool the various components of the machinery so that the engine can work properly.A
continuouslyB
regularlyC
constantlyD
period
考题
单选题Which of the engine components listed increases air charge density and helps to improve engine operating efficiency?（）A
Intake manifoldB
Water-cooled exhaust systemC
After-coolerD
Exhaust diffuser
考题
单选题The diesel engine exhaust gas bypass, as fitted with some waste heat boilers, is installed to （）A
prevent engine back pressure at heavy loadsB
increase total engine efficiency at low loadsC
prevent boiler corrosion at low engine loadsD
improve engine fuel consumption at any load
考题
单选题In a four-stroke engine the camshaft rotates at （）.A
half the engine speedB
twice the engine speedC
the engine speedD
four times the engine speed
考题
单选题Fuel has to be injected into the engine at a high pressure so that it （） correctly.A
is purifiedB
in timedC
is compressedD
atomizes
考题
单选题A full-flow 50μm filter is installed ,（） so the injection system components on the main engine are safeguarded.A
as close to the main engine as possibleB
as close to the main pump as possibleC
just before the fuel valveD
just before the booster pump
考题
单选题One end of a cylinder for a medium or high-speed diesel engine is sealed by the piston and rings, the other end is sealed by the （）A
crankcaseB
cylinder headC
valve coverD
engine frame
考题
单选题In conventional systems, the injection pressure（）, while it’s（）in common rail diesel engines.A
fluctuates with the engine speed to some extent, independent of the engine speedB
keeps constant at all engine speed, dependent on the engine speed to some extentC
keeps constant at all engine speed, independent of the engine speedD
is decided by the engine speed, constant at all engine speed
考题
单选题The cylinders, with cooling jackets, are （） to the engine frame by eight tie rods.A
screwedB
weldedC
fastenedD
rotated
考题
单选题The gas loads on the engine structure are constrained by means of hydraulically preloaded （） which connect the bed plate, frame sections and cylinder jackets into a single unit.A
connecting rodsB
main bearingC
columnD
tie rods
考题
单选题Maximum horsepower of a diesel engine is attained （）.A
when the engine RPM is pulled down by overloadB
at rated engine RPMC
at 95 % of rated engine RPMD
at 95 % of a properly adjusted governor RPM with the engine under full load
考题
单选题Which is false about engine trials?（）A
engine trails should be done after finishing the operation of turning the engine with the turning gear and starting the engine on air brieflyB
in the operation of engine trails, the main engine should be running in low-speedC
As to the ship equipment with twin main engine, engine trials should be done with one engine ahead and another engine astern at the same timeD
the order “engine trials” should be given by the bridge
考题
单选题Fuel oil injected into the cylinder of a diesel engine just after the piston passes top dead center, will（）A
increase engine powerB
increase engine loadC
decrease engine powerD
improve fuel economy
考题
单选题“Stand by engine” means （）.A
prepare to stop the engineB
assemble an engine on its bedplateC
make an engine ready for startingD
make an engine run steadily
考题
单选题A device which functions to bring a diesel engine to a full stop to protect it from damage is known as a/an （）A
torque limiterB
over-speed tripC
over-speed governorD
load limit governor
考题
单选题The fuel injection system is very important, so any trouble of it will （） the operation of the main engine.A
be affectedB
affectC
be effectedD
effect
考题
单选题In a four-stroke engines the camshaft rotates at （）.A
half the engine rotational speedB
twice the engine rotational speedC
the engine rotational speedD
four times the engine rotational speed
热门标签
最新试卷
