A diesel engine with a combustion chamber located between the crowns of two pistons is known as a/an （）.

[单选题]Poor combustion in a diesel engine can be caused by （）.A . high compression pressureB . low intake air temperatureC . low exhaust pressureD . high scavenge air pressure

[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

[单选题]D．iesel engine blow-by is the leakage of combustion gases past the( ).A．oil rings onlyB．compression and scraper ringsC．cylinder liner sealingD．cylinder liner ring grooves

[单选题]F．or a continuous operation diesel engine, a duplex filter unit would be the best arrangement becauseA．changing filter elements would not interrupt engine operationB．filtering occurs twice in each pass of oil through the systemC．clogging will not occ

[单选题]In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve?A．Noise coming from that air starting valveB．Continuous operation of the starting air compressorC．Zero air pressure in the air starting