问题
单项选择题
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
答案
参考答案：B
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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
参考答案：B
