单选题The expansion tank in a diesel engine closed freshwater cooling system is located at ()Athe highest point in the systemBthe lowest point in the systemCnear the floorDplate level or near the tank top level
单选题
The expansion tank in a diesel engine closed freshwater cooling system is located at ()
A
the highest point in the system
B
the lowest point in the system
C
near the floor
D
plate level or near the tank top level
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单选题Before starting a diesel engine that has an engine driven lube oil pump, the engineer should ().Aopen the bypass lineBcut in the lube oil coolerCpressurize the lube oil systemDtop off the expansion tank
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单选题In a closed cooling system for a turbocharged, four-stroke/cycle diesel engine, fluctuating water pressure can be caused by ()Aimproper venting of the cooling systemBcarrying the expansion tank water level too highCa totally clogged impeller in the cooling water pumpDan incorrectly set cooling system temperature control
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单选题The outlet from an expansion tank of a closed freshwater cooling system should be piped to the ().Acylinder head water outlet headerBcylinder jacket inlet mainCheat exchanger inlet connectionDjacket water pump suction line
单选题The highest pressure in any closed diesel engine freshwater cooling system is at the ().Ajacket water outletBexpansion tank inletCheat exchanger inletDcooling water pump outlet
单选题During the diesel engine running, the water level of FW expansion tank should normally kept in the () level of glass tube.Athe highestBabove 3/4C1/2-3/4Dthe lowest
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单选题During the diesel engine running, the water level of F.W expansion tank should normally kept in the () level of glass tube.Athe highestBabove 3/4C1/2 -3/4Dthe lowest
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单选题Operating a diesel engine for prolonged periods, with a closed freshwater cooling system, at temperatures lower than the normal design temperature can cause ().Athe formation of sulfuric acidBa decrease in lube oil viscosityCa decrease in cooling water pHDa thermostat failure
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