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单选题
60. Charted depth is the().
A
vertical distance from the chart sounding datum to the ocean bottom, plus the height of tide
B
vertical distance from the chart sounding datum to the ocean bottom
C
average height of water over a specified period of time
D
average height of all low waters at a place
答案解析
正确答案：B
解析：
解析:海图水深是海图深度基准面到海底的垂直距离。
