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
The common rail engines show great advantages in combustion especially（）.
A
at high speed and full load
B
at low speed and part load
C
when heavy fuel oil is used at sea
D
when the ships run long distance
参考答案
参考解析
解析：
暂无解析
更多 “单选题The common rail engines show great advantages in combustion especially（）.A at high speed and full loadB at low speed and part loadC when heavy fuel oil is used at seaD when the ships run long distance” 相关考题
考题
Adam Smith mentioned the number 4 800 in order to ______.A．show the advantages of the division of laborB．emphasize how powerful the individual worker wasC．show the advantages of the old craft systemD．emphasize the importance of increased production
考题
The error messages given by a C compiler show the message text，the most common(68) of the error，and a suggestion for fixing the error．A．consequenceB．causeC．informationD．result
考题
The results of the examination ________ that you have all made great ________.
A.shows...progressesB.show...progressesC.show...progressD.shows...progress
考题
The display screen is the most common (72) device used to show you what the computer is doing．A．inputB．printingC．outputD．electronic
考题
The art show was _______ being a failure; it was a great success.A. far from B. along with C. next to D. regardless of
考题
Modern marine diesel engines equipped with mechanical fuel injection operate on a combustion phase within the cycle which is ______.A.entirely constant pressureB.entirely constant temperatureC.a combination of constant volume and constant pressureD.a combination of constant temperature and constant pressure
考题
All diesel engines are classified as ______．A.Four cycleB.Compression ignitionC.Vacuum ignitionD.External combustion
考题
Diesel engines obtain combustion air through turbo chargers，blowers，or ______．A.Air startersB.CarburetorsC.Natural aspirationD.Air receivers
考题
The research at the University of Wisconsin is mentioned to show( ) A.the isolation of stem cells
B.the effects of gene therapies
C.the advantages of human cloning
D.the limitations of tissue replacements
考题
The advantage of rail transport is （）A、Great amount of shippedB、Less damage rationC、Fast speed, exact schedule, and cost savedD、Direct shipping line
考题
单选题In the common rail system, excessive pressure in the header may be caused by （）A
improper adjustment of the bypass valveB
a dribble in the fuel injection nozzleC
insufficient leak-off through injection nozzle packingD
a malfunctioning injection nozzle
考题
单选题One of the advantages in the use of a dry liner over a wet liner is（）A
it is fitted with neoprene O-ring sealsB
the honing process makes it easier to maintain the desired oil filmC
there is likelihood of water leaking into the combustion spaceD
it fits more loosely due to a decrease in heat transfer through the composite wall
考题
单选题（）, so they are widely used on board ship nowadays.A
Diesel engines have more advantages in comparison with gasoline enginesB
Diesel engines have more advantages in comparison to gasoline enginesC
Gasoline engines have more advantages in comparison with diesel enginesD
Gasoline engines have more advantages in comparison to diesel engines
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 nation's economy was _____ up and would certainly show a great improvement in the next five years.A
risingB
gettingC
lookingD
showing
考题
单选题A clearly visible beneath of RT-flex engines is their operation at all ship speedsThis is achieved by the superior combustion performance（）A
shocklessB
smokelessC
no vibrationD
noiseless
考题
单选题The separation of impurities and water from （） is essential for good combustion of diesel engines.A
lube oilB
fuel oilC
turbine oilD
grease
考题
单选题Directional intake ports in diesel engines are used to （）.A
reduce air charge turbulenceB
induce air swirlC
deflect hot combustion gas away from the valvesD
oppose the effects of piston induced squish
考题
单选题Why does the anther mention Lady Chatterley’s Lover?A
To show television has great influence on our daily life.B
To show that television’s content has new changes.C
To show that violence and sex are accepted by the audience.D
To show the standards of TV regulation have changed
考题
单选题（）uses one or two high pressure pumps for all the cylinders with one more standby, while（）have a separate high-pressure pump for each cylinder.A
A common rail engine；conventional enginesB
A conventional engine；common rail enginesC
A marine diesel engine；most other enginesD
A two-stroke engine；four-stroke engines
考题
单选题In a common rail engine, the fuel is injected into cylinders（）A
by injection pumpsB
at a time decided by the injection pump timingC
by a signal opening the magnetic valvesD
at a time decided by the cam directly
考题
单选题In common rail engines, the fuel is（） before is injected into the cylinders.A
stored in a common fuel lineB
pumped by the injection pumpC
at low pressureD
already atomized
考题
单选题All diesel engines are classified as（）.A
four cycleB
compression ignitionC
vacuum ignitionD
external combustion
考题
单选题Modern marine diesel engines using mechanical fuel injection, operate on a combustion cycle which is（）A
a combination of constant volume and constant pressureB
a combination of constant temperature and constant pressureC
entirely constant pressureD
entirely constant volume
考题
单选题Turbocharged four-stroke/cycle diesel engines utilize valve overlap for（）.A
improving cylinder scavengingB
preheating the combustion chamberC
reducing air charge densityD
preventing valve wear
考题
单选题The main operating characteristic of diesel engines which distinguishes them from other internal combustion engines is the （）A
method of supplying airB
cooling systemC
method of igniting fuelD
valve operating mechanism
考题
单选题Modern marine diesel engines equipped with mechanical fuel injection operate on a combustion phase within the cycle which is（）A
entirely constant pressureB
entirely constant temperatureC
a combination of constant volume and constant pressureD
a combination of constant temperature and constant pressure
热门标签
最新试卷
