单项选择题

What information is found in the chart title? （）

A.Date of the first edition
B.Date of the edition and，if applicable，the revision
C.Information on the sounding datum
D.Information on which IALA buoyage system applies

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单项选择题

What defines a great circle? （）

A.A curved line drawn on a Mercator Chart
B.A course line that inscribes a loxodromic curve
C.The shortest distance between any two points on the earth
D.The smallest circle that can be drawn on the face of a sphere

单项选择题

The survey information upon which a chart is based is found （）.

A.at the top center of the next line
B.near the chart title
C.at the lower left corner
D.at any convenient location

单项选择题

The soundings on the chart are based on the depth of water available at （）.

A.mean low water
B.mean lower low water
C.mean high water
D.mean high water springs