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【单选题】

Corrosion inhibitors and/or soluble oils are added to diesel engine cooling systems to ()

A、maintain low pH in the cooling water

B、reduce the cooling water temperature

C、increase cooling water hardness

D、form a protective film on metal surfaces

更多“Corrosion inhibitors and/or soluble oils are added to diesel engine cooling systems to ()”相关的问题
第3题

A、cavitation erosion in the water jackets  B、excess corrosion inhibitor in the coolant  C、dirty jacket water cooler  D、defective turbocharger  

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第4题

A、regulating the level of corrosion inhibitor in the primary cooling system  B、the level of the freshwater expansion tank  C、varying the engine load to meet temperature requirements  D、the operation of the thermostatic valve  

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第5题

A、reduces and prevents corrosion of standing rigging  B、prevents corrosion of running rigging  C、reduces and prevents wear caused by the rubbing of one object against another  D、protects the body against extreme cold  

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第6题

A、reduces and prevents corrosion of standing rigging  B、prevents corrosion of running rigging  C、reduces and prevents wear caused by the rubbing of one object against another  D、protects the body against extreme cold  

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第7题

A、corrosion and grooving of exhaust valves  B、corrosion and gumming of the fuel injection pump  C、salt deposits in the exhaust manifold  D、slag deposits in the fuel injection equipment  

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