轮机英语【轮机长】题库

单选题 1分

If a centrifugal pump develops insufficient discharge pressure as a result of worn wearing rings, wh...

If a centrifugal pump develops insufficient discharge pressure as a result of worn wearing rings, which of the following corrective actions is required?
  • A. Replace the rings
  • B. Throttle in on the discharge valve
  • C. Always replace the wearing rings and the impeller as a set
  • D. Throttle in on the suction valve
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Which of the following problems can occur when an excessive number of water screen tubes are plugged?
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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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