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-stroke

[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]For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.A . it has a longer power strokeB . more air gets into the cylinder each strokeC . it develops twice as many power s

[单选题]The two-stroke cycle begins with the piston coming up from the bottom of its stroke, with scavenge ports in the sides of the cylinder being （）.A . shutB . closingC . openedD . closed

[单选题]Large, two-stroke/cycle, main propulsion, diesel engine cylinders can be successfully pressure charged during normal operation, by using the （）.A . exhaust gas temperature systemB . exhaust load systemC . constant or pulse pressure systemD . constant

[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]On a four-stroke diesel engine, when the piston is driven downwards by the expanding gas, it delivers power to the crankshaft through the （）.A . thrust blockB . sounding rodC . connecting rodD . push rod

[单选题]If a four-stroke/cycle diesel engine is running at 1550 RPM, the speed of the camshaft will be（）.A . 525 RPMB . 775 RPMC . 1550 RPMD . 1800 RPM

[单选题]In a four-stroke/cycle diesel engine, the camshaft rotates at （）A . twice the crankshaft speedB . half the crankshaft speedC . the same speed as that of the crankshaftD . a speed independent of that of the crankshaft

[单选题]The color of the exhaust from a diesel engine should be （）A . clearB . hazy light brownC . hazy light blueD . hazy light grey