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單項選擇題

The （） or balance tank collects the re-circulated fuel oil.

A.buffer
B.sump
C.bilge
D.overflowing

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單項選擇題

The （） chamber is enclosed between the cylinder head and piston.

A.lubrication
B.injection
C.cooling
D.combustion

單項選擇題

The （） of the lubricant should be sufficient to hold the film together, but it should allow the lubricant to flow easily.

A.specific gravity
B.viscosity
C.acid value
D.calorific value