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單項(xiàng)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

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單項(xiàng)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

單項(xiàng)選擇題

A diesel engine is similar to a gasoline engine except that the former has no （）.

A.cross-head
B.cylinder
C.connecting rod
D.spark plug