單項選擇題（） into the cylinder because no fuel can burn （） it.

A.Air must be admitted；without
B.Oil must be injected；without
C.Air must be admitted；with
D.Oil must be injected；with


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1.單項選擇題When the fuel oil is burning in the combustion chamber, it （）.

A.gives up large amount of heat
B.gives off large amount of heat
C.gives up large amount of steam
D.gives off large amount of steam

2.單項選擇題After the ship is out of the harbour and in “Full Speed”, well change （）.

A.to fuel oil instead of diesel oil
B.for fuel oil instead of diesel oil
C.to diesel oil into fuel oil
D.for diesel oil into fuel oil

3.單項選擇題A diesel engine burns （） a gasoline engine of the same capacity in the same period of time.

A.as much fuel as
B.less fuel than
C.less fuel as
D.more fuel than

4.單項選擇題Since the engine doesn’t work well, you’d better （） as soon as possible.

A.reduce its speed
B.find out its trouble
C.eliminate its trouble
D.all the above

5.單項選擇題（）, so they are widely used on board ship nowadays.

A.Diesel engines have more advantages in comparison with gasoline engines
B.Diesel engines have more advantages in comparison to gasoline engines
C.Gasoline engines have more advantages in comparison with diesel engines
D.Gasoline engines have more advantages in comparison to diesel engines