Gas exchange, which is a basic part of the cycle of an internal combustion engine, is .A.t

Gas exchange, which is a basic part of the cycle of an internal combustion engine, is .

A.the supply of normal air and removal of compressed air

B.the supply of fuel oil and combustion of the atomized oil

C.the supply of fresh air and removal of exhaust gases

D.the supply of fresh air and removal of the extra heat

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