單項(xiàng)選擇題

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

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單項(xiàng)選擇題

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

單項(xiàng)選擇題

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