A.longitude line
B.latitude line
C.line of position
D.fix
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A.red
B.yellow
C.with red and white vertical stripes
D.with a distinct color and pattern unique to each buoy
A.dead reckoning
B.Pilotage
C.great circle sailing
D.geographic navigation
A.must utilize magnetic courses
B.must take set and drift into account
C.should be replotted hourly
D.should be started each time the vessel's position is fixed
A.ignores the effect of surface currents
B.is most useful when in sight of land
C.must be plotted using magnetic courses
D.may be started at an assumed position
A.north side of the mark
B.west side of the mark
C.east side of the mark
D.south side of the mark
最新試題
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