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【单选题】Telescopic pipes to the piston of a large slow-speed main propulsion diesel engine are designed to prevent _____.
A.
excessive crankcase pressure
B.
excessive lube oil temperature
C.
contamination of the lube oil by water
D.
contamination of the cooling water by lube oil
【简答题】slow speed diesel
【单选题】In a large, slow-speed, main propulsion diesel engine, which of the parts listed is under tension when the engine is running?
A.
Bed plate
B.
Column
C.
Entablature
D.
Tie rod
【单选题】Which of the following procedures should be carried out when a large, low-speed, diesel engine is operated with one cylinder secured? .
A.
Lubrication to the defective cylinder should be increased
B.
Cooling water temperature to the engine should be increased
C.
Only the turbocharger speed should be reduced
D.
Engine speed should be reduced
【单选题】The slow speed main propulsion diesel usually operates on ___________ .
A.
the four stroke cycle
B.
the four-stroke cycle
C.
the two stroke cycle
D.
the two-stroke cycle
【单选题】The power developed by a large slow-speed main propulsion diesel engine is dependent upon the _______.
A.
quantity of air it takes in and retains in the cylinders during a given time period
B.
proportion of trapped air that is utilized in the combustion process
C.
thermodynamic efficiency of the engine cycle
D.
all of the above
【单选题】The slow speed main propulsion diesel usully operates on ____.
A.
the four stroke cycle
B.
the four-stroke cycle
C.
the two stroke cycle
D.
the two-stroke cycle
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