have no plating joints of 90
retain the lube oil as long as possible before it recirculates through the system
provided drain/return lines that are no greater than 24 inches from the pump suction
be provided with only a perfectly horizontal bottom
第1题:
Loss of lubricating oil pressure to the main propulsion diesel engine will actuate a/an _____.
A.over-speed trip
B.audible/visual alarm
C.the ships/boats general alarm
D.reserve oil storage tank
第2题:
In an auxiliary diesel engine bypass type lubricating oil system, the main lube oil pump forces_______ .
A.all of the oil used by the engine through a filter
B.some of the oil used by the engine through a filter
C.some of the oil used by the engine through a centrifuge
D.all of the oil used by the engine through a centrifuge
第3题:
On a medium-speed main propulsion diesel engine, the crank-pin or crank journalbearings receive lubricating oil from( ).
A.a spindle lubricator
B.an oil jet
C.internal splashing
D.drilled passages in the crankshaft
第4题:
the sump oil level
oil flow sight glasses
bearing temperatures
all of the above
第5题:
decreased compression pressure
increased lube oil pressure
lower lube oil temperature
excessive leakage past the piston rings
第6题:
Lubrication for the main reduction gears used with diesel engines is usually supplied by
A.oil from the main engine sump
B.an independent lube oil system
C.the stern bearing head tank
D.the stem bearing sump tank
第7题:
A dirty diesel engine oil filter element can best be detected by ______.
A.visual inspection of the elements
B.the pressure drop across the filter
C.high lube oil sump temperature
D.decrease in oil viscosity from the filter
第8题:
Which of the following is operated from the main engine room console on an automated vessel?
A.Fire pump and lube oil pump
B.Lube oil pump and distilling plant
C.Distilling plant and shaft alley door
D.Shaft alley door and fixed CO2 release
第9题:
visual inspection of the elements
the pressure drop across the filter
high lube oil sump temperature
decrease in oil viscosity from the filter
第10题:
excessive crankcase pressure
excessive lube oil temperature
contamination of the lube oil by water
contamination of the cooling water by lube oil