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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(驾驶专业) > 航海英语 > 航海图书资料 > 航海通告与警告

单项选择题

Charts are subject to frequent correction according to （）.

A.Notices to Mariners
B.Mariner's handbook
C.Sailing Directions
D.Guide to Port Entry

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单项选择题
Contour elevations on this chart refer to heights in feet above mean （）.

A.lower low water
B.high water
C.low water
D.sea level
单项选择题
Navigational charts are subject to frequent changes，the important ones of which are promulgated by （）.

A.Admiralty Notices to Mariners
B.Mariner's Handbook
C.Catalogue
D.Sailing Directions
单项选择题
No navigational aids are shown and the chart is not kept corrected for alterations in depths inside the pecked lines. For more detailed information，the larger scale charts must be （）.

A.referred to
B.appreciated
C.met with
D.concerned
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