The _______ cycle engine is usually lubricated by oil in its crankcase which is either pumped under pressure to the bearing surfaces or is splashed onto them by rotation of the crank webs.

The _______ cycle engine is usually lubricated by oil in its crankcase which is either pumped under pressure to the bearing surfaces or is splashed onto them by rotation of the crank webs.


a) Two
b) Four


Answer: b


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