A.A rhumb line appears as a straight line
B.Distance is measured at the midlatitude of the track line
C.Meridians appear as curved lines converging toward the nearer pole
D.Parallels，except the equator，appear as curved lines
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A.variation
B.true directions
C.magnetic directions
D.annual rate of variation change
A.Cly
B.Cla
C.Cl
D.C
A.In the Coast Pilot
B.In the Nautical Almanac
C.In the List of Lights
D.In the Sailing Directions
A.Feet
B.Yards
C.Fathoms
D.Meters
A.fish trap areas
B.naval exercise areas
C.underwater cables
D.recommended track lines
最新試題
The description Racon beside an illustration on a chart would mean a （）.
Which chart symbol indicates the bottom is clay（）.
（）is not a position-fixing system.
A chart with a scale of 1:80，000 would fall into the category of a（）.
Charts showing the coast of Mexico are produced by the United States（）.
On chart，bearings to near objects should be used in preference to objects farther off，because（）.
A chart position enclosed by a square is a（n）（）.
Where would you obtain data on currents for areas of the world not covered by the National Ocean Service（）.
The short-long dashed magenta line around Gardiners Island marks（）.
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（）.