A.as soon as possible
B.prior to its publication
C.in advance of any possible accident
D.by means of other than airmails
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A.broadcast
B.broadcasted
C.are broadcast
D.are broadcasted
A.SafetyNET
B.NAVTEX
C.NAVAREA
D.VHF R/T
A.conduction fog
B.radiation fog
C.frontal fog
D.advection fog
A.active weather disturbances such as hurricanes or tropical storms
B.the latest navigational warnings
C.scheduled vessel arrivals and departures for a 24-hour period
D.water levels at river ports where run-off affects tidal heights
A.Overhead power lines
B.Louisiana-Mississippi ferry crossings
C.Two railroad trestles
D.Two submerged oil pipelines
最新試題
Navigational warnings and weather bulletins for shipping（）from Singapore Radio.
Section V of the ADMIRALTY NOTICES TO MARINERS is（）.
The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.
The broken magenta line which runs parallel to the shorebetween Roanoke Point and Mattituck Inlet marks a（）.
LOW AT 34N 135E ESLY SLWLY INTST NC．This description is most likely to be under the heading of（）.
Navigational warnings are published according to（）.
Why is a warning sign displayed at the gangway or access point of a barge during cargo transfer（）.
Which is a weekly publication advising mariners of important matters affecting navigational safety（）.
（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.
On the approach of a warm front the barometric pressure usually（）.