On most modern diesel engines, the main and connecting rod bearings receive their lubricating oil by （）.
A、banjo feed
B、splash feed
C、gravity feed
D、pressure feed
相似题目
-
Trunk-type diesel engine pistons are most effectively cooled by heat（）
A . conducted through the engine block
B . conducted to water cooled cylinder walls
C . conducted through the piston crown
D . loss to escaping exhaust gase
-
The load sharing characteristics of two diesel generator operating in parallel are mostly dependent on their governor （）.
A . load limit settings
B . idle speed settings
C . speed limit settings
D . speed droop setting
-
Which arrangement of shell plating is used most in modern shipbuilding（）.
A . Clinker
B . Flush
C . In-and-Out
D . Joggled
-
Most modern Loran-C receivers，when not tracking properly，have a（n）（）.
A . Bell alarm to warn the user
B . Lighted alarm signal to warn the user
C . Alternate signal keying system
D . View finder for each statio
-
With regards to a diesel engine crankcase explosion, the most violent is the（） (1) primary explosion (2) secondary explosion
A . (1) only
B . (2) only
C . both (1) and (2)
D . neither (1) or (2)
-
The most common diesel engine fuel system problems are caused by （）.
A . incorrect adjustments
B . dirty fuel
C . broken fuel lines
D . excessive vibratio
-
The diesel engine valve subjected to most severe conditions of service is the （）.
A . cylinder exhaust valve
B . air starting valve
C . air inlet valve
D . cylinder relief valve
-
If a diesel engine runs roughly, which of the systems listed is most likely to be at fault?（）
A . Fuel
B . Lubricating
C . Cooling
D . Ignitio
-
When monitoring diesel engine performance, the most useful instrument to use is the （）
A . dwell-tachometer
B . exhaust gas pyrometer
C . fuel flow rate mete
D . exhaust gas analyzer
-
A change in the degree of fuel atomization in a diesel engine would most greatly affect （）.
A . air turbulence
B . fuel penetration
C . fuel spray angle
D . fuel injection rate
-
Modern linguistics is mostly prescriptive, but sometimes descriptive.
A . 正确
B . 错误
-
The most serious effect of air trapped in a diesel engine jacket water cooling system is that it（）.
A . causes colloid suspension in the cooling water
B . reduces the capability of the lubrication system
C . can form pockets which block the flow of coolant through the system
D . leads to the scuffing of cylinder wall
-
In some modern large diesel engines, which of the following is used as the support for the main bearings?（）
A . Bedplate
B . Block
C . Base
D . Sum
-
Modern marine diesel engines using mechanical fuel injection, operate on a combustion cycle which is（）
A . a combination of constant volume and constant pressure
B . a combination of constant temperature and constant pressure
C . entirely constant pressure
D . entirely constant volume
-
Most large, low-speed, main propulsion diesel engines use duplex lube oil strainer to （）
A . decrease the time required between cleanings
B . removes all large and small foreign objects
C . ensure a positive flow of oil at all times
D . ensure that all lube oil has been treated twice
-
The most common instrument used to measure diesel engine exhaust pressure is the （）
A . pyrometer
B . bourdon gauge
C . pneumercator
D . manometer
-
"Scavenging" on a diesel engine means （）.
A . injecting fuel oil into a cylinder
B . removing exhaust gases from the cylinder
C . forcing air into the cylinders under pressure after the exhaust valve has dosed
D . a combination of all the above
-
On most diesel engines, the governor controls the output speed by （）.
A . controlling the amount of fuel injected into the cylinders
B . varying the speed of the turbocharger
C . adjusting the compression ratio
D . changing the timing of the fuel injection camshaft
-
The （）, cage rotor induction motor is the first choice marine motor in most modern ships because of its electrical and mechanical simplicity.
A . single phase
B . two phase
C . three phase
D . four phase
-
13. The internal layout and configuration_______most modern, totally enclosed lifeboats.
A、 are the same as
B、 are typical of
C、 vary with
D、 differ from
-
Sontag opposed that modern takes too much interpretation attention on the ____and significance.
-
According to the passage, the most successful modern Olympic Games was the one held in St. Louis, America.
-
Because of the complexity of the modern machine, most offices require secretaries ________.
A．to have specified training
B．specified in traing
C．to train specifiedly
D．training specified
-
In a modern internal combustion diesel engine, the load carrying part of the engine is referred to as the________.
A.bedplate or base
B.sump or oil pan
C.cylinder block
D.frame.
