单选题 1分

If there is sufficient sea room,alteration of ______ may be the most effective action to avoid close...

If there is sufficient sea room,alteration of ______ may be the most effective action to avoid close-quarters situation.
  • A.speed and course
  • B.speed alone
  • C.course alone
  • D.speed or course

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  • A.difference between the vessel's speed through the water at any instant and the new speed ordered on the telegraph
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  • A.the resistance of the water
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