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 numeral in the center of a wind rose circle on a pilot chart indicates the （）.
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（）.
Every chart is liable to be incomplete（）.
The revision date of a chart is printed on which area of the chart? （）
The broken magenta lines（long and short dashes）in and around Mobjack Bay indicate（）.
The maximum difference between mean time and apparent time is （）.
Which information does the outer ring of a compass rose on a nautical chart provide（）.
That the scale of any part of a chart to be larger than the scale of the survey is（）.
What information is NOT found in the chart title? （）
Which chart symbol indicates the bottom is clay（）.