A.magnetic latitudes
B.magnetic declinations
C.dip
D.isogonic lines
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A.complete and often very poor surveys
B.correct and often very good surveys
C.inadequate and often very old surveys
D.adequate and present surveys
A.equipment's
B.tools
C.apparatus
D.aids
A.with
B.in
C.by
D.to
最新試題
The description Racon beside an illustration on a chart would mean a （）.
What information is NOT found in the chart title? （）
A chart position enclosed by a square is a（n）（）.
On chart，bearings to near objects should be used in preference to objects farther off，because（）.
The path that a vessel is expected to follow，represented on a chart by a line drawn from the point of departure to the point of arrival，is the（）.
What information is found in the chart title? （）
That the scale of any part of a chart to be larger than the scale of the survey is（）.
The shoreline on charts generally represents the mean（）.
A chart with a scale of 1:80，000 would fall into the category of a（）.
A chart projection depicting the poles and a small area on either side of a connecting meridian，that is sometimes used for star charts，is the（）.