单项选择题
A.Chart Number only B.Chart Number + Previous NM Number/Year C.Chart Number + Between Previous and Present Dates D.Cumulative Number
On notification by Admiralty Notice to Mariners that a ...
单项选择题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（）.
A.as soon as possible B.prior to its publication C.in advance of any possible accident D.by means of other than airmails
Navigational warnings and weather bulletins for shippin...
单项选择题Navigational warnings and weather bulletins for shipping（）from Singapore Radio.
A.broadcast B.broadcasted C.are broadcast D.are broadcasted
（）is the system for the broadcast and automatic recepti...
单项选择题（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.
A.SafetyNET B.NAVTEX C.NAVAREA D.VHF R/T
