A revised print of a chart is made ().

A、when there are numerous corrections to be made or the corrections are extensive B、when a low-stock situation occurs and minor corrections are made C、every two years to update the magnetic variation information D、after every major hydrographic survey of the area covered by the chart

时间:2022-10-04 05:09:29 所属题库:海图及海图作业题库

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