单项选择题
A.starting B.stopping C.to start D.to stop
A gudgeon pin in a trunk piston may be free to float an...
单项选择题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
A governor automatically controls engine speed by regul...
单项选择题A governor automatically controls engine speed by regulating （）.
A.fuel supply B.firing order C.engine load D.oil level
A distance piece, with ground faces, may be interposed ...
单项选择题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
