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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1.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

4.單項選擇題A distance piece, known as a () may be interposed between the rod and the bearing housing.

A.bearing shell
B.bearing liner
C.compression plate
D.lead wire

5.單項選擇題A diesel engines crankcase oil level is found to be too high√ You should suspect that ().

A.the engine was over filled
B.there might be a fuel leak
C.there might be a water leak
D.all of the above