A.operated manually once an hour
B.operated until the engine has started
C.placed into operation only at maximum load
D.adjustable to meet lubrication requirements
您可能感興趣的試卷
你可能感興趣的試題
A.remove suspended and precipitated solids from the boiler water
B.completely drain the boiler in an emergency situation
C.prevent hardened scale deposits in the water drum
D.remove floating impurities from the oily water surface
A.around the engine
B.around the cooler
C.to the expansion tank
D.overboard
A.seawater contamination
B.frequent surface blows
C.dissolved oxygen deaeration
D.frequent bottom blows
A.total dissolved solids
B.salt contamination
C.water hardness
D.chlorine contamination
A.reduce mean effective pressure
B.decrease average compression pressure
C.decrease air charge density
D.increase power output
最新試題
A diesel engine piston ring face is in direct contact with the （）.
In a simple mechanical governor, the （）.
What is the function of the thrust bearing?（）
Proper filtering and straining of fuel oil is important because the （）.
White smoke exhausting from an operating diesel engine may indicate （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
Diesel engine control can be obtained by the bridge （）.
The function of diesel engine piston compression rings is to （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.