A diesel engine burns （） a gasoline engine of the same capacity in the same period of time.

A . prolonged maintenance intervals B . improved atomization C . greater fuel economy D . incomplete combustio

A . temperature of the exhaust gases B . energy supplied to the turbocharger C . air pressure to the intake manifold D . purge of exhausted gases from the cylinder

A . corrosion and grooving of exhaust valves B . corrosion and gumming of the fuel injection pump C . salt deposits in the exhaust manifold D . slag deposits in the fuel injection equipment

A . ignition lag B . engine horsepower C . lube oil system pressure D . specific fuel consumptio

A . has little or no internal friction B . has a lower effective compression ratio C . operates with scavenge air under a positive pressure D . operates without energy absorbing intake and exhaust stroke

A . a leaking seal ring B . heat transfer from exhaust valves C . restricted cooling passages D . overheated intake valve

A . increase thermal efficiency B . cause clogging of the fuel system C . increase the ability of the engine to start in cold weather D . produce corrosion in the cylinder and exhaust system at low load

A . lower the no-load RPMs B . provide more air for combine with the fuel C . increase the no-load RPMs D . provide more fuel combine with the air

A . blows out the exhaust gases B . supplies oxygen for combustion C . cools the valves and cylinder walls D . all of the above

A . immediately open all crankcase relief ports B . increase crankcase exhauster speed to draw cool air into the engine C . allow the engine to cool naturally D . increase crank case scavenge air to remove unburned gase

A . proper fuel injection B . water in the fuel C . incomplete combustion D . burning of lube oil

A . engine power losses B . smoking due to unburned fuel C . high exhaust temperature readings D . all of the above

A . cold intake air B . excessive compression pressure C . excessive cylinder lubrication D . a light load

A、A. turbine engine B、B. gas turbine C、C. steam engine D、D. internal combustion engine

A . clogged fuel injection pumps B . increased cylinder liner wear C . intake valve stem corrosion D . varnish deposit on pisto

A . cylinders B . exhaust valves C . pistons D . fuel valve

A . failing to reach rated speed B . knocking under maximum load C . hunting or surging under light load D . overspeeding and running away

A . cross-head B . cylinder C . connecting rod D . spark plug

A . slam charger B . turbocharger C . fuel atomizer D . fuel injector

A . injecting fuel oil into a cylinder B . removing exhaust gases from the cylinder C . forcing air into the cylinders under pressure after the exhaust valve has dosed D . a combination of all the above

A . control axial movement of the crankshaft B . transmit engine thrust to the propeller shaft C . absorb vibrations in the propeller shafting D . prevent propeller thrust from being transmitted to the hul

A . higher working temperature of piston and cylinder B . the use of scavenge ports C . fewer power strokes per revolution of the crankshaft D . part of the fuel is burned as the piston is moving away from top dead center

A . increase exhaust back pressure B . causes excessive crankcase pressure C . can only be detected by a compression check D . decreases fuel consumptio

A.increase thermal efficiency B.cause clogging of the fuel system C.increase the ability of the engine to start in cold weather D.produce corrosion in the cylinder and exhaust system at low loads