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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Steam smoke will occur when（）.
Weekly NMs are available without subscription from appointed（）.
Which is the correct procedure for anchoring a small to medium size vessel in deep water （）.
The broken magenta line which runs parallel to the shorebetween Roanoke Point and Mattituck Inlet marks a（）.
In revised editions of Admiralty charts the（）are corrected first．
LOW AT 34N 135E ESLY SLWLY INTST NC．This description is most likely to be under the heading of（）.
Steam smoke will occur when（）.
On the approach of a warm front the barometric pressure usually（）.
Navigational warnings and weather bulletins for shipping（）from Singapore Radio.
Periodic publications notifying changes in，or additions to，previously published navigational data are（）.