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
Charts showing the coast of Mexico are produced by the United States（）.
A chart with a scale of 1:80，000 would fall into the category of a（）.
Which information is found in the chart title（）.
The broken magenta lines（long and short dashes）in and around Mobjack Bay indicate（）.
Every chart is liable to be incomplete（）.
On a Mercator chart，1 nautical mile is equal to（）.
Which chart symbol indicates the bottom is clay（）.
Which information does the outer ring of a compass rose on a nautical chart provide（）.
The soundings on the chart are based on the depth of water available at （）.
That the scale of any part of a chart to be larger than the scale of the survey is（）.