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單項(xiàng)選擇題

The higher the cetane number, （） the ignition quality of the fuel.

A.the worse
B.the better
C.the smaller
D.the greater

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單項(xiàng)選擇題

The specific gravity of fuel oil is a （）.

A.absolute value
B.relative value
C.constant value
D.set value

單項(xiàng)選擇題

Cylinder oil is a high viscosity mineral oil, with a （） machined to the anticipated sulfur content of the fuel.

A.TAN
B.TBN
C.SAN
D.SBN

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