A.Overhead power lines
B.Louisiana-Mississippi ferry crossings
C.Two railroad trestles
D.Two submerged oil pipelines
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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
A.Supplements
B.Annual Summary
C.Navigational Warnings
D.Notices to Mariners
最新試題
On notification by Admiralty Notice to Mariners that a new edition of one of the books，or a new supplement to one，has been published，it should be obtained（）.
The charts show two dashed lines crossing the river justsouth of St. Catherine Bar Light. What does this indicate? （）
On a nautical chart，the inner ring of a compass rose indicates（）.
Weekly NMs are available without subscription from appointed（）.
Periodic publications notifying changes in，or additions to，previously published navigational data are（）.
The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.
In revised editions of Admiralty charts the（）are corrected first．
SEARCHABLE NOTICES TO MARINERS can be searched by all the following options except（）.
Navigational warnings are published according to（）.
（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.