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问题详情

What is the purpose of a striker plate? （）

A、Provides surface for applying force on machinery

B、Provides landing surface for the sounding bob

C、Absorbs machinery vibration

D、Prevents valve stem over-travel

时间：2022-01-10 23:47 关键词：船舶结构基本知识水路交通运输技能考试海船船员考试

答案解析

B

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