A.broadcast
B.broadcasted
C.are broadcast
D.are broadcasted
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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
A.fish trap area
B.pipeline
C.demarcation line
D.cable area
最新試題
The broken magenta line which runs parallel to the shorebetween Roanoke Point and Mattituck Inlet marks a（）.
What is the most important source of information to be used in correcting charts and keeping them up to date（）.
The height of a tide can be increased by（）.
The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.
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? （）
The range of a light on Admiralty Charts is normally the（）.
Navigational warnings are published according to（）.
Navigational warnings and weather bulletins for shipping（）from Singapore Radio.
Why is a warning sign displayed at the gangway or access point of a barge during cargo transfer（）.