單項選擇題

A governor automatically controls engine speed by regulating （）.

A.fuel supply
B.firing order
C.engine load
D.oil level

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單項選擇題

A distance piece, with ground faces, may be interposed between the rod and the bearing housing, its thickness being chosen to ensure the correct （）.

A.expansion ratio
B.pressure ratio
C.compression ratio
D.clearance ratio

單項選擇題

A distance piece, with ground faces, known as a compression plate, may be interposed between the rod and the beating housing, its thickness being chosen to ensure the correct （）.

A.compression pressure
B.compression test
C.compression ratio
D.compression clearance