The cooling water jacket is common to all the cylinders but there are often （） to ensure that each cylinder receives the right amount and flow of water.

[单选题]The jacket water temperature in a diesel engine closed freshwater cooling system is normally controlled by （）A . regulating the level of corrosion inhibitor in the primary cooling systemB . the level of the freshwater expansion tankC . varying the en

[单选题]If the jacket water temperature rises rapidly above normal in a diesel engine, you should firstA．place standby cooler in operationB．reduce engine loadC．check thermostatic valveD．clean sea water strainer

[单选题]A． water jacket is placed around the exhaust manifolds of propulsion diesel enginesto( ).A．reduce heat radiation to the engine roomB．aid in preventing turbocharger overheatingC．condense and drain moisture from exhaust gasesD．dampen exhaust gas pulsat

[单选题]There is （） in any water cooling system for a diesel engine allowing for expansion and water make-up in the system as well as air vent and chemicals addition.A . a setting tankB . a service tankC . a head tankD . an expansion joint

[单选题]The cooling water temperature （） over a period of 8 hours, and then shut down.A . should be gradually increasedB . should be gradually reducedC . should be constantly keptD . should be varied up and dow

[单选题]In the closed cooling system, the water （）.A . is made to circulate out of the systemB . is made to circulate within the systemC . is made circulate within the systemD . is made circulate out of the system

[单选题]Diesel engine jacket water is used in the distillation process as the （）.A . coolant for the distillateB . coolant for the brine coolerC . means of heating the feedwaterD . primary means of producing a vacuum within the distiller

[单选题]C．ooling water is circulated through______in some injectors.A．the nozzleB．the nozzle tipC．the internal passagesD．the fuel re-circulated

[单选题]The cooling water of the diesel engine should be treated with chemical, because it contains .A．alkaliB．acidityC．salinityD．impurity

[单选题]The cooling water is in direct contact with the outer surface of the liner as a result of which it is termed a （）.A . water linerB . wet linerC . dry linerD . drown liner