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
The fog most commonly encountered at sea is called（）.
In revised editions of Admiralty charts the（）are corrected first．
On the high seas，a fog signal consisting of one prolonged blast followed by four short blasts would indicate the presence of a（）.
The charts show two dashed lines crossing the river justsouth of St. Catherine Bar Light. What does this indicate? （）
Steam smoke will occur when（）.
The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.
On the approach of a warm front the barometric pressure usually（）.
Periodic publications notifying changes in，or additions to，previously published navigational data are（）.
SEARCHABLE NOTICES TO MARINERS can be searched by all the following options except（）.
What is the significance of the broken magenta lines which roughly parallel the shore between Roanoke Point and Orient Point on Long Island（）.