单项选择题
A.the designed area B.the designated area C.the indicated area D.all area over the world
Many navigational warnings are of a temporary nature，bu...
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
LOW AT 34N 135E ESLY SLWLY INTST NC．This description is...
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
LOW ABOUT 300 MILES SOUTHWEST OF LISBON 1004 MOVING SLW...
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
