In a common sea water cooling system, from the sea suction one of a pair of sea water circulating pumps provides sea water which circulates the lubricating oil cooler, the jacket water cooler and the piston water cooler before( )
A. cooling
B. heating
C. sucking
D. discharging overboard
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In an emergency situation, for example in the event of damage to a fresh water cooler or generator, the ( ) can be used to supply sea water to the fresh water cooling system.merely by removing the blind-flanges.
A. sea water cooler or generator
B. emergency fire fighting pump
C. fresh water pumps
D. sea water pumps
The function of lubricating oil is to( )
A. maintain even distribution of bearing wear
B. maintain a constant oil temperature
C. maintain a pressurized fluid film between moving surfaces
D. remove entrained water
The lube oil pump used in a diesel engine is a( ) usually.
A. volute pump
B. centrifugal pump
C. diaphragm pump
D. gear pump
In an auxiliary diesel engine, the reason for knurling ( 压花纹) the piston skirt is to( )
A. improve skirt lubrication
B. allow for expansion
C. transmit forces evenly
D. improve the piston seal