单选题In any diesel engine closed freshwater cooling system, the lowest pressure exists at the （）.Ajacket water outletBcooling water pump outletCheat exchanger outletDexpansion tank atmospheric vent
单选题
In any diesel engine closed freshwater cooling system, the lowest pressure exists at the （）.
A
jacket water outlet
B
cooling water pump outlet
C
heat exchanger outlet
D
expansion tank atmospheric vent
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