jacket water outlet
cooling water pump outlet
heat exchanger outlet
expansion tank atmospheric vent
第1题：
High diesel engine cooling water temperatures can be caused by ______.
A.air in the cooling system
B.an overhauled water pump
C.correct amount of coolant
D.no air in the cooling system
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：
If the coolant temperature of a closed cooling water system for a diesel enginegradually increases, the trouble usually is( ).
A.a broken shaft on the freshwater pump
B.an excessive accumulation of scale in the heat exchanger
C.an incorrect thermostatic element operating range
D.lube oil in the cooling water
第4题：
air in the cooling system
an overhauled water pump
correct amount of coolant
no air in the cooling system
第5题：
fresh water expansion tank
sea water expansion tank
thermostatic expansion valve
jacket water cooler accumulator
第6题：
Prolonged operation of a diesel engine with a closed cooling water system, at lower than normal designed operating temperatures can ______.
A.increase power output
B.decrease lube oil viscosity
C.eliminate fuel knock
D.cause sulfuric acid formation
第7题：
60 to75
80 to 95
100 to 115
120 to 135
第8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9题：
air binding of the engine cooling system
a cracked water cooled exhaust manifold
blockage in the heat exchanger
faulty operation of the thermostat
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