A.conduction fog
B.radiation fog
C.frontal fog
D.advection fog
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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
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
最新試題
Steam smoke will occur when（）.
Weekly Notices are dated for the（）appropriate to the week they are issued on the UKHO website.
Which is the correct procedure for anchoring a small to medium size vessel in deep water （）.
Which is a weekly publication advising mariners of important matters affecting navigational safety（）.
Navigational warnings and weather bulletins for shipping（）from Singapore Radio.
（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.
The charts show two dashed lines crossing the river justsouth of St. Catherine Bar Light. What does this indicate? （）
Navigational warnings are published according to（）.
For what purpose would using a Lambert conformal chart be more convenient than using a Mercator?（）
Generally，（）are used as the track charts on the high sea，（）are used for harbors，inland waters and coastal areas．