The ______pump is usually used as the lubricating oil pump.A.turbineB.screwC.vaneejectorD.

The purpose of the delivery check valve used in a diesel fuel injection jerk pump is to _____.

_____uses one or two high pressure pumps for all the cylinders with one more____ standby, while______have a separate high－pressure pump for each cylinder.

The purpose of the wearing rings used in a centrifugal pump is to _____.A.prevent an inter

The lube oil pump used in a diesel engine is a _____.A.volute pumpB.centrifugal pumpC.diap

The usual symptoms of cavitation in a centrifugal pump is _____.A.noise and vibrationB.an

The word_____is usually NOT used by British people.A．tubeB．pubC．railroadD．taxi