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單項(xiàng)選擇題

（）refers to the angle between true North and the heading line of the ship.

A.True position
B.True meridian
C.True course
D.True bearing

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單項(xiàng)選擇題

（）is the distance east or west measured in degrees，minutes and seconds of arc on the equator between the prime meridian and the meridian passing through the place.

A.Longitude
B.Latitude
C.Height
D.Bearing