单项选择题
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
The survey information upon which a chart is based is f...
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
The soundings on the chart are based on the depth of wa...
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
The revision date of a chart is printed on which area o...
单项选择题The revision date of a chart is printed on which area of the chart? （）
A.Top center B.Lower-left corner C.Part of the chart title D.Any clear area around the neat line
