The color of the exhaust from a diesel engine should be （）

[单选题]A． two stroke diesel engine exhaust temperature will be lower than a four stroke diesel engine of the same displacement because the _____. ① MEP is lower and the scavenging air is cooling the exhaust gases ② valve overlap in a four strokeA．①B．②C．① an

[单选题]Diesel engine exhaust gas temperatures can be used to determine individual cylinder （）.A . performanceB . horsepower outputC . fuel consumptionD . scavenge effect

[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]A two-stroke diesel engine exhaust temperature will be lower than a four-stroke diesel engine of the same displacement because the （）(1) MEP is lower and the scavenging air is cooling the exhaust gases(2) valve overlap in a four-strokeA . (1) only is

[单选题]E．xhaust gases are generally removed from the cylinders of a two-stroke/cycle diesel engine byA．natural aspirationB．masked intake valvesC．air ceilsD．scavenging air

[单选题]A． smoking exhaust from an operating diesel engine could be caused by( ).A．low sulfur content in the fuelB．a loose injector inlet connectionC．late fuel injectionD．high injection pressure

[单选题]Features such asheight,weight,and skin color [differ] from individual to in

[单选题]( )，domesticated grapes grow in clusters，range in color from pale green to

[单选题]( )，domesticated grapes grow in clusters，range in color from pale green to

[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