单选题 1分

During the watch keeping at sea, at appropriate intervals inspection should be made of _____ , auxil...

During the watch keeping at sea, at appropriate intervals inspection should be made of _____ , auxiliary machinery and steering gear spaces by the duty engineer.
  • A. the main propulsion plant
  • B. lifesaving jackets
  • C. lifeboat engine
  • D. state of emergency generator

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