In a two-stroke/cycle diesel engine, the exhaust gases are expelled from the cylinder by the（）<br>A:exhaust manifold<br>B:valve bridge<br>C:pressure of the fresh air charge<br>D:valve adjusting gear

In a two-stroke/cycle diesel engine, the exhaust gases are expelled from the cylinder by the（）
A:exhaust manifold
B:valve bridge
C:pressure of the fresh air charge
D:valve adjusting gear

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