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單項選擇題

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

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單項選擇題

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

單項選擇題

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

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