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
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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
A.cloud movement
B.vessel heading
C.waves
D.swells
A.extremely cold air from shore passes over warmer water
B.warm dry air from shore passes over cooler water
C.cold ocean water evaporates into warm air
D.cool rain passes through a warm air mass
A.FORECAST
B.GALE WARNING
C.SYNOPSIS
D.STORM WARNING
最新試題
Why is a warning sign displayed at the gangway or access point of a barge during cargo transfer（）.
The broken magenta line which runs parallel to the shorebetween Roanoke Point and Mattituck Inlet marks a（）.
The fog most commonly encountered at sea is called（）.
The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.
The Daily Memorandum contains information on（）.
On a nautical chart，the inner ring of a compass rose indicates（）.
Steam smoke will occur when（）.
（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.
Many navigational warnings are of a temporary nature，but others remain in force for several months or may be succeeded by（）.
In revised editions of Admiralty charts the（）are corrected first．