What is commonly used to create turbulence in a diesel engine combustion system?

[单选题]Turbulence in a diesel engine cylinder is of major importance in providing （）.A . proper fuel meteringB . complete fuel/air mixingC . minimal fuel penetrationD . proper fuel timing

[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]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]In a commonly used fuel oil system, the oil is stored in tanks in the double bottom from which it is pumped to （） and heated.A . a service tankB . a settling tankC . an expansion tankD . a double bottom tank

[单选题]In a diesel engine cooling water system, a pH of 60 indicates a/an （）.A . slightly acidic conditionB . slightly alkaline conditionC . overtreatment of waterD . neutral condition of water

[单选题]The fuel oil system for a diesel engine can be considered in two parts--the fuel supply and the （） systems.A . fuel treatmentB . fuel combustionC . fuel injectionD . fuel separating

[单选题]A diesel engine cooling water system with a pH factor of 30 indicates a condition of （）.A . slight acidityB . slight alkalinityC . excessive alkalinityD . excessive acidity

[单选题]In a diesel engine lube oil system, which of the following parts should be lubricated first?（）A . Camshaft beatingsB . Main bearingsC . Piston crownsD . Cylinder wall

[单选题]Diesel engine jacket water is used in the distillation process as the （）.A . coolant for the distillateB . coolant for the brine coolerC . means of heating the feedwaterD . primary means of producing a vacuum within the distiller

What are the two most commonly used citation styles?A. Modern Language Associati