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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(驾驶专业) > 航海英语 > 航海图书资料 > 海图及海图作业

单项选择题

A chart position enclosed by a semi-circle is a(n) （）.

A.fix
B.estimated position
C.dead reckoning position
D.running fix

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（）is a term denoting the determination of a ship’s position by observations of Celestial or terrestrial objects，or by a combination of both．

A.Course-planning
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单项选择题

（）chart 3994，positions read from this chart should be shifted 0.03 minutes Northward．

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