Oil is supplied to the cylinder wall and （） by means of mechanical lubricators.

时间：2019-04-14 07:19:56 关键词：to,the,cylinder

Oil is supplied to the cylinder wall and （） by means of mechanical lubricators.

A.the cylinder cover

B.the piston rings

C.the piston crown

D.the piston skirt

答案解析

B

举一反三

For a diesel engine when the piston is at the （） the clearance volume is the largest.

The compressed air is admitted to each cylinder through a cam operated by starting air valve when the piston has just passed its （）.

The sealing rings are in four parts and pressed together around the piston rods by means of （）.

The two-stroke cycle begins with the piston coming up from the bottom of its stroke with scavenge ports in the sides of the cylinder being （）.

Oil is supplied to the cylinder wall and （） by means of mechanical lubricators.

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