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單項選擇題

The （） can tell us how much heat we can get from the burning of an oil.

A.viscosity
B.flash point
C.cetane number
D.calorific value

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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

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

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