Indirect cooling of fuel injector nozzle holders for diesel engines is accomplished primarily by （）.

[单选题]Indirect cooling of fuel injector nozzle holders for diesel engines is accomplished primarily byA．heat conduction into the injected fuel oilB．heat conduction into the water jacket wallC．water circulation through passages in the holderD．fuel oil circu

[单选题]The fuel injector pump is operated by （） which drives the plunger up and down.A . a separate motorB . a camC . a generatorD . a chai

[单选题]Fix the fuel injector into （） after repair.A . the cylinder linerB . the cylinder coverC . the cylinder jacketD . the pisto

[单选题]The plunger in the fuel injector pump, usually operated by a （）, is driven up and down when working.A . crankshaftB . camshaftC . piston rodD . rack and pinio

[单选题]The fuel injector injects a fine spray of fuel into the hot air and combustion （）, producing much high pressure in the gases.A . has begunB . takes placeC . occursD . happe

[填空题] Fuel injector的中文意思是（）。

[单选题]A Kort nozzle is a(n)（）.A . hollow tube surrounding the propeller used to improve thrustB . nozzle attached to a firefighting hoseC . intake valve on a diesel engineD . piston cylinder on a diesel engine

[单选题]The( )in the injector will lift at a pre-set pressure which ensures that the fuelwill atomize once it enters the cylinder.A．needle valveB．nozzlesC．pistonD．spring

[单选题]The （） in the injector will lift at a pre-set pressure which ensures that the fuel will atomize once it enters the cylinder.A . needle valveB . nozzlesC . pistonD . spring

[单选题]The needle valve in the injector （） at a pre-set pressure which ensures that the fuel will atomize once it enters the cylinder.A . will liftB . will be liftedC . will closeD . will be closed