In which of the scavenging methods listed will the exhaust valve be located in the cylinder head?（）<br>A:Return-flow<br>B:Uniflow<br>C:Cross-flow<br>D:Direct flow

In which of the scavenging methods listed will the exhaust valve be located in the cylinder head?（）
A:Return-flow
B:Uniflow
C:Cross-flow
D:Direct flow

出自：海船船员证

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