A.magnetic equator
B.magnetic longitude reference line
C.points where there is no variation
D.points where there is no annual change in variation
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A.prevailing wind directions
B.prevailing ocean current directions
C.probable surface current flow
D.shortest great circle routes
A.conspicuous object
B.steep depression in the surrounding hills that resembles a cup
C.domed structure useful for navigation
D.calling-up-point used for traffic control
A.published with
B.combined with
C.in connection with
D.subject to
A.with
B.from
C.on
D.by
A.found in the center(s) of the compass rose(s)
B.indicated by isogonic lines
C.found in a note on the chart
D.All of the above
最新試題
When a buoy is in position only during a certain period of the year，where may the dates when the buoy is in position be found?（）
When navigating in high latitudes and using a chart based on a Lambert conformal projection，（）.
What information is NOT found in the chart title? （）
The only cylindrical chart projection widely used for navigation is the （）.
Which aid is NOT marked on a chart with a magenta circle? （）
The maximum difference between mean time and apparent time is （）.
The survey information upon which a chart is based is found （）.
The description Racon beside an illustration on a chart would mean a （）.
The soundings on the chart are based on the depth of water available at （）.
The revision date of a chart is printed on which area of the chart? （）