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
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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 is operating with excessively high exhaust temperatures at all cylindersTo correct this condition, you should FIRST （）.
White smoke exhausting from an operating diesel engine may indicate （）.
The main purpose of the piston oil scraper rings is to （）.
The highest pressure in a diesel engine cylinder normally occurs （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
An automated diesel engine should normally shut down due to （）
The function of diesel engine piston compression rings is to （）.
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）