轮机英语【轮机长】题库

单选题 1分

Why is it so important to keep the lube oil viscosity within safe limits?

  • A. To keep the oil protective film between moving metal surfaces.
  • B. The lube oil viscosity has no influence on the oil’s lubrication ability.
  • C. To keep the additives in good condition.
  • D. It is not important
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轮机英语【轮机长】-题库

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相关试卷

第一章 船舶主推进装置
第二章 船舶辅助机械
第三章 船舶电气和自动化
第四章 船舶轮机管理业务
第五章 国际公约、规则
专项训练一
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