Poor combustion in a diesel engine can be caused by （）.

[单选题]A diesel engine with a combustion chamber located between the crowns of two pistons is known as a/an （）.A . double-acting engineB . opposed pistons engineC . single-acting engineD . horizontal acting engine

[单选题]Diesel engine control can be obtained by the bridge （）.A . at any timeB . only after the engine room control station is switched to “bridge control”C . whenever the secondary station is switched to "bridge control"D . with the a

[单选题]Sudden unloading of a diesel engine can cause（）.A . decreased fuel efficiencyB . increased exhaust temperatureC . black smokeD . overspeed tri

[单选题]Diesel engine exhaust temperatures may be used to indicate （）.A . leaking exhaust valvesB . an overloaded cylinderC . a clogged injector nozzleD . all of the above

[单选题]C．ombustion knock occurring in a diesel engine can be caused by _____.A．low coolant temperatureB．insufficient fuelC．high ambient temperatureD．carbon buildup on the injector tips

[单选题]Combustion knock occurring in a diesel engine can be caused by （）.A . excessive fuel penetrationB . prolonged injection lagC . reduced ignition lagD . prolonged ignition lag

[单选题]Diesel engines obtain combustion air through turbo chargers，blowers，or（）.A . air startersB . carburetorsC . natural aspirationD . air receiver

[单选题]_____ the engines, the diesel engine is ____ used engine on boardA．Between / more commonlyB．Among / the most commonlyC．Between / not more commonlyD．Among / not the most commonly

[单选题]The heart of the diesel engine is the （） where the fuel is burnt and the power developed.A . crankcaseB . cylinderC . scavenge boxD . pisto

[单选题]The diesel engine is a type of （）.A . turbine engineB . gas turbineC . steam engineD . internal combustion engine