A.mark the position of a lost mooring
B.determine your vessel's sideslip underway
C.determine your speed through the water
D.indicate location of a man overboard
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A.Conspicuous
B.Permanent
C.Preliminary
D.Temporary
A.From
B.By
C.on
D.With
A.either，or
B.neither，nor
C.another，nor
D.other，or
A.Amendments to Admiralty Sailing Directions
B.Amendments to Admiralty List of Lights and Fog Signals
C.Amendments to Admiralty List of Radio Signals
D.Supplement to Guide to Port Entry
A.Admiralty Sailing Directions
B.Admiralty List of Signals
C.Mariner's Handbook
D.Admiralty Notices to Mariners
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The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.
Which is a weekly publication advising mariners of important matters affecting navigational safety（）.
Generally，（）are used as the track charts on the high sea，（）are used for harbors，inland waters and coastal areas．
Weekly Notices are dated for the（）appropriate to the week they are issued on the UKHO website.
Steam smoke will occur when（）.
The Daily Memorandum contains information on（）.
The range of a light on Admiralty Charts is normally the（）.
（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.
Section V of the ADMIRALTY NOTICES TO MARINERS is（）.
The charts show two dashed lines crossing the river justsouth of St. Catherine Bar Light. What does this indicate? （）