A.fix
B.estimated position
C.dead reckoning position
D.running fix
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A.Course-planning
B.Position-fixing
C.Radar-plotting
D.Stowage-plan making
A.frequent
B.so frequent
C.frequent that
D.so frequent that
A.To consider
B.To check
C.To examine
D.To agree with
A.cylindrical projection
B.simple conic projection
C.polyconic projection
D.rectangular projection
A.after every major hydrographic survey of the area covered by the chart
B.when there are numerous corrections to be made or the corrections are extensive
C.when a low-stock situation occurs and minor corrections are made
D.every two years to update the magnetic variation information
最新試題
The description Racon beside an illustration on a chart would mean a （）.
That the scale of any part of a chart to be larger than the scale of the survey is（）.
When navigating in high latitudes and using a chart based on a Lambert conformal projection，（）.
The revision date of a chart is printed on which area of the chart? （）
The maximum difference between mean time and apparent time is （）.
（）is not a position-fixing system.
Which chart symbol indicates the bottom is clay（）.
The short-long dashed magenta line around Gardiners Island marks（）.
On chart，bearings to near objects should be used in preference to objects farther off，because（）.
Charts showing the coast of Mexico are produced by the United States（）.