jacket water outlet
expansion tank inlet
heat exchanger inlet
cooling water pump outlet
第1题：
In a diesel engine closed freshwater cooling system, the amount of coolant flowing through the heat exchanger is controlled by the __.
A.suction pressure regulator
B.thermostatic bypass valve
C.sea water temperature
D.water level in the expansion tank
第2题：
a broken shaft on the freshwater pump
an excessive accumulation of scale exchanger
an incorrect thermostatic element operating range
lube oil in the cooling water
第3题：
The pressure differential across a diesel engine lube oil system duplex filter should be checked to ________.
A.determine the need for filter cleaning
B.measure any change in oil viscosity
C.prevent damage to the filter
D.determine the need for batch filtration
第4题：
Exhaust temperature
Lube oil level
Lube oil pressure
Water level in the expansion tank
第5题：
carbon buildup in the exhaust manifold
overcooling of the exhaust manifold
eroded muffler baffle plates
high injection pressure
第6题：
supplying high pressure oil into a hydraulic motor
supplying high temperature air into the cylinder
supplying high pressure air into the cylinder
electrical igniting
第7题：
prevent engine back pressure at heavy loads
increase total engine efficiency at low loads
prevent boiler corrosion at low engine loads
improve engine fuel consumption at any load
第8题：
Any increase in the exhaust back pressure of a four-stroke/cycle diesel enginewill( ).
A.reduce engine horsepower output
B.aid in silencing the exhaust noise
C.increase the mean effective pressure
D.contribute to effective cylinder scavenging
第9题：
axial loads
firing loads
inertia loads
centripetal loads
第10题：
improper venting of the cooling system
carrying the expansion tank water level too high
a totally clogged impeller in the cooling water pump
an incorrectly set cooling system temperature control