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單項(xiàng)選擇題

A true bearing of a charted object，when plotted on a chart，will establish a （）.

A.fix
B.line of position
C.relative bearing
D.range

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單項(xiàng)選擇題

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

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

單項(xiàng)選擇題

（）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
B.Position-fixing
C.Radar-plotting
D.Stowage-plan making

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