單項選擇題()chart 3994,positions read from this chart should be shifted 0.03 minutes Northward.

A.To consider
B.To check
C.To examine
D.To agree with


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1.單項選擇題A Mercator chart is a ().

A.cylindrical projection
B.simple conic projection
C.polyconic projection
D.rectangular projection

2.單項選擇題A revised print of a chart is made ().

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

3.單項選擇題All straight lines represent great circle tracks on a chart based on a(n) ().

A.Mercator projection
B.polyconic projection
C.orthographic projection
D.gnomonic projection

4.單項選擇題Chart correction information is NOT disseminated through the ().

A.Summary of Corrections
B.Local Notice to Mariners
C.Daily Memorandum
D.Chart Correction Card

5.單項選擇題Charted depth is the ().

A.vertical distance from the chart sounding datum to the ocean bottom,plus the height of tide
B.vertical distance from the chart sounding datum to the ocean bottom
C.average height of water over a specified period of time
D.average height of all low waters at a place