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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

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單項(xiàng)選擇題

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

單項(xiàng)選擇題

The path that a vessel is expected to follow，represented on a chart by a line drawn from the point of departure to the point of arrival，is the（）.

A.DR plot
B.track line
C.heading
D.estimated course

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