单项选择题

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

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

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单项选择题

A position obtained by applying only your vessel’s course and speed to a known position is a （）.

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

单项选择题

A line of position is（）.

A.a line connecting two charted objects
B.a line on some point of which the vessel may be presumed to be located
C.the position of your vessel
D.not used in a running fix

单项选择题

A line connecting all possible positions of your vessel at any given time is a（）.

A.longitude line
B.latitude line
C.line of position
D.fix