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
单项选择题 What defines a great circle? （）
单项选择题 The survey information upon which a chart is based is found （）.
单项选择题 The soundings on the chart are based on the depth of water available at （）.
