Which of the engine components listed increases air charge density and helps to improve en

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Which of the engine components listed increases air charge density and helps to improve engine operating efficiency?

A.Intake manifold

B.Water-cooled exhaust system

C.After-cooler

D.Exhaust diffuser

请帮忙给出正确答案和分析,谢谢!

热搜:l波段波长范围为1565~1625