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（）is the main reason that reduces the power advantage of a two-stroke engine over a same size four-stroke one to about（）

A、Inefficient scavenging；twice

B、Inefficient scavenging；1~8 times

C、Fewer strokes in a circle；twice

D、Fewer strokes in a circle；1~8 time

时间：2022-01-01 05:45 关键词：船舶电气与船舶安全

答案解析

B

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