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單項選擇題

A gudgeon pin in a trunk piston may be free to float and rotate, with （） to limit axial movement.

A.split pins
B.crankpins
C.dipsticks
D.circlips

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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

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