A.nominal range
B.luminous range
C.geographical range
D.visible range
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A.A storm surge
B.A high pressure area
C.The jet stream
D.A cold front
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.Reprints of Radio Navigational Warnings
B.Amendments to Admiralty Sailing Directions
C.Amendments to Admiralty Lists of Lights and Fog Signals
D.Amendments to Admiralty List of Radio Signals
A.Chart Number only
B.Chart Number + Previous NM Number/Year
C.Chart Number + Between Previous and Present Dates
D.Cumulative Number
A.as soon as possible
B.prior to its publication
C.in advance of any possible accident
D.by means of other than airmails
最新試題
What is the most important source of information to be used in correcting charts and keeping them up to date（）.
On a nautical chart，the inner ring of a compass rose indicates（）.
LOW ABOUT 300 MILES SOUTHWEST OF LISBON 1004 MOVING SLWLY SOUTHEAST COMMA FILLING 1006 BY MIDNIGHT.This phrase is likely to be under the heading of（）.
The Daily Memorandum contains information on（）.
Which is a weekly publication advising mariners of important matters affecting navigational safety（）.
Which would influence a magnetic compass（）.
Vessels should not anchor or trawl in the vicinity of pipelines and are（）in the pipeline area shown on the chart.
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（）.
（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.