A diesel engine piston ring face is in direct contact with the （）.
举一反三
- For a diesel engine， when the piston is at the （）， the clearance volume is the largest.
- For diesel engine piston cooling， lubricating oil can be supplied to the pistons by a/an （）.
- The linear motion of a diesel engine piston is converted to the rotary motion required to drive gears， propeller shafts， and generators by the （）.
- In<br/>a four-strokes diesel engine, the cycle requires four separate<br/>strokes of the piston, i.e. ____. A: suction B: compression C: expansion D: exhaust
- In order to reverse the rotation of a two-stroke/cycle loop scavenged， direct reversing， propulsion diesel engine， the cam positions must be changed for the （）.