Boycott、Chauvinism、diesel都源自人名。

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

A . governor malfunctions B . fuel injection system malfunctions C . high cylinder lube oil temperatures D . low intake temperature

A . can not be ignited by a spark unless the vapor is in a confined space B . are nontoxic in all concentrations C . can not be ignited by a spark unless they are at their auto-ignition temperature D . are heavier than air

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

A . Spark plug B . Heat of compression C . Carburetor D . Glow ping

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 . tension stretch B . tie rods C . through bolts D . main bearing

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

A . delivering more air into the cylinder than it would normally receive during an ordinary charging process B . forcing the products of combustion out of the cylinder with the fresh air charge C . collecting the air charge at the cleaner D . combustion and expansion of hot ga

A . reducing exhaust gas velocity B . increasing the frequency of gas vibration C . the use of long head pipes D . the use of zinc electrode

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

A . four cycle B . compression ignition C . vacuum ignition D . external combustio

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

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

A.principle B.principal C.cause D.case

A．Montgomery Bus Lines B．Rosa Parks C．National City Lines D．Montgomery City Lines

A．联合抵制 B．气球 C．不在，缺席 D．幸免于；比 长命 此题为多项选择题。

是 否