单项选择题
Many navigational warnings are of a temporary nature，but others remain in force for several months or may be succeeded by（）.
A.Notices to Mariners
B.Sailing Directions
C.List of Lights and Signals
D.Guide to Port Entries
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相关考题
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单项选择题
LOW AT 34N 135E ESLY SLWLY INTST NC．This description is most likely to be under the heading of（）.
A.GL WNG
B.GEN SYN
C.STM WNG
D.TY WNG -
单项选择题
LOW ABOUT 300 MILES SOUTHWEST OF LISBON 1004 MOVING SLWLY SOUTHEAST COMMA FILLING 1006 BY MIDNIGHT.This phrase is likely to be under the heading of（）.
A.GALE WARNING
B.24 HOURS FORECAST
C.GENERAL SITUATION
D.TROPICAL CYCLONE WARNING -
单项选择题
Information for updating nautical charts is primarily found in the（）.
A.Notice to Mariners
B.Coast Pilots
C.nautical chart catalogs
D.Sailing Directions
