A magnetic strainer is used in the diesel engine reduction gear oil system to remove small particles of（）.

[单选题]A． magnetic strainer is used in the diesel engine reduction gear oil system to remove small particles ofA．waterB．babbittC．iron or steelD．acids

[单选题]To minimize corrosion, fuel oil strainer disks, spacers and scraper blades are made of （）.A . brassB . copperC . ironD . monel metal or stainless steel

[单选题]C．rankcase explosions in propulsion diesel engines result fromA．the splashing of lubrication oil by the crankshaftB．the dilution of crankcase oil with particles of combustionC．broken fuel lines spraying oil on the crankcaseD．the ignition of unburned

[单选题]C．rankcase explosions in propulsion diesel engines result from ____.A．the splashing of lubrication oil by the crankshaftB．the dilution of crankcase oil with particles of combustionC．broken fuel lines spraying oil on the crankcaseD．the ignition of unb

[单选题]The pressure differential across a diesel engine lube oil system duplex filter should be checked to ________.A．determine the need for filter cleaningB．measure any change in oil viscosityC．prevent damage to the filterD．determine the need for batch fil

[单选题]The power output of a turbocharged diesel engine will drop if the cooling water flow through the after-cooler is interrupted because the （）.A . turbocharger stallsB . exhaust pressure increasesC . air charge density decreasesD . scavenge effect incre

[单选题]The magnetic field is provided by electromagnets so arranged that adjacent poles have ___.A．opposite polarityB．the same polarityC．negative polarityD．positive polarity

[单选题]On a medium-speed main propulsion diesel engine, the crank-pin or crank journalbearings receive lubricating oil from( ).A．a spindle lubricatorB．an oil jetC．internal splashingD．drilled passages in the crankshaft

[单选题]What does a pyrometer measure on a diesel engine? （）A . Water temperatureB . Water pressureC . Exhaust temperatureD . Air box pressure

[单选题]The highest pressure in any closed diesel engine freshwater cooling system is at the （）.A . jacket water outletB . expansion tank inletC . heat exchanger inletD . cooling water pump outlet