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單項(xiàng)選擇題

A position that is obtained by using two or more intersecting lines of position taken at nearly the same time，is a(n) （）.

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

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單項(xiàng)選擇題

A position that is obtained by applying estimated current and wind to your vessel’s course and speed is a(n) （）.

A.estimated position
B.dead reckoning position
C.fix
D.None of the above

單項(xiàng)選擇題

A position obtained by crossing lines of position taken at different times and advanced to a common time is a(n) （）.

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