Coast Pilots and navigational charts are kept corrected and up-to-date by using the ______.
A.pilot charts
B.Notices to Mariners
C.Tide Tables
D.Current Tables
正确答案：B
航路指南和航行海图通过使用航海通告被改正保证最新
CoastPilotsandnavigationalchartsarekeptcorrectedand
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