A.top of the ring groove
B.cylinder liner oil film
C.bottom of the ring groove
D.back of the ring groove
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A.loss of suction in the circulating pump
B.leak in the primary cooling system
C.broken raw water pump shaft
D.burned or cracked piston in one cylinder
A.centrifugal force rotates the ball-head
B.flyweight centrifugal force is balanced by spring force
C.flyweight centrifugal force is balanced by hydraulic pressure
D.speeder spring alone actuates the fuel control rod
A.sensitivity
B.stability
C.promptness
D.speed droop
A.Prevents lateral movement of the slow speed gear
B.Transmits propeller thrust to the hull
C.Keeps spring bearings in line
D.Prevents main reduction gear axial movement
A.under high pressure
B.under low pressure
C.heated to reduce viscosity
D.cooled to increase viscosity
A.fuel oil pump will over-speed if dirt is not removed
B.fuel oil transfer pumps cannot tolerate small amounts of dirt in the oil
C.fuel injectors may be damaged by foreign particles in the fuel oil
D.dirty fuel will clog the intake air filter
A.low lube oil temperature
B.high ambient air temperature
C.low tube oil pressure
D.high exhaust system back pressure
A.the type and size of the engine
B.the condition of the engine
C.ambient temperature
D.all of the above
A.it has a longer power stroke
B.more air gets into the cylinder each stroke
C.it develops twice as many power strokes at the same speed
D.higher combustion pressure is developed
A.viscosity is too low
B.temperature is too low
C.pump discharge pressure is higher than the systems pressure
D.pump capacity is greater than the systems needs
最新试题
The highest pressure in a diesel engine cylinder normally occurs ().
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm ().
Maximum horsepower of a diesel engine is attained ().
Routine monitoring of a diesel engine should include ().
For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because ().
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?()
A diesel engine piston ring face is in direct contact with the ().
Proper filtering and straining of fuel oil is important because the ().
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?()
The function of diesel engine piston compression rings is to ().