Since the burning or combustion takes place within the engine itself, the engine is known as （）.

[单选题]In the experiment, the burning inside the bottle can___.A． equalize the air pressure inside and outsideB． make a seal in the neck of the bottleC． finish up the oxygen inside the bottleD． produce more oxygen inside the bottle

[单选题]The heat that is produced by burning garbage can be used to______.A． make electricityB． make energy sourceC． boil waterD． save coal

[单选题]When the fuel oil is burning in the combustion chamber, it _____.A．gives up large amount of heatB．gives off large amount of heatC．gives up large amount of steamD．gives off large amount of steam

[单选题]When the fuel oil is burning in the combustion chamber, it （）.A . gives up large amount of heatB . gives off large amount of heatC . gives up large amount of steamD . gives off large amount of steam

[单选题]The burning of the fuel adds more heat to the air charge, causing it to expand and force the engine piston to do work on the crankshaftWhat does “it” mean in this sentence?（）A . the burningB . the fuelC . the air chargeD . the engine pisto

[单选题]Theoretical perfect combustion in a diesel engine yields by-products of_____.A．aldehydes and carbon dioxideB．water vapor and carbon monoxideC．nitrogen and carbon monoxideD．water vapor and carbon dioxide

[单选题]If the flame from combustion in the cylinder of a four-stroke engine past the piston into the space below, the accumulation of flammable mixture would be ignited, thus resulting in _____.A．the crankcase explosionB．lifting of the cylinder safety valve

[单选题]Fuel is delivered into the combustion space by （）.A . a cooling systemB . a lubricating systemC . an electric systemD . an injection system

[单选题]If the flame from combustion in the cylinder of a four-stroke engine past the piston into the space below, the accumulation of flammable mixture would be ignited, thus resulting in （）.A . the crankcase explosionB . lifting of the cylinder safety valv

[单选题]In the combustion chamber, the part whose surface is exposed to the highest temperature is the （）.A . cylinder linerB . cylinder coverC . pistonD . exhaust valve