A.conspicuous
B.inconspicuous
C.a government facility or station
D.a radio transmitter
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A.does not change
B.improves rapidly
C.improves only slightly
D.becomes poor
A.stop
B.to stop
C.stopping
D.stopped
A.you recovery
B.you recover
C.you recovering
D.you recovered
A.Weekly Editions
B.Quarterly Editions
C.Annual Editions
D.Monthly Editions
A.every day
B.every week
C.every month
D.every year
最新試題
Which is a weekly publication advising mariners of important matters affecting navigational safety（）.
Section V of the ADMIRALTY NOTICES TO MARINERS is（）.
What is the most important source of information to be used in correcting charts and keeping them up to date（）.
Which is the correct procedure for anchoring a small to medium size vessel in deep water （）.
In revised editions of Admiralty charts the（）are corrected first．
The range of a light on Admiralty Charts is normally the（）.
Information for updating nautical charts is primarily found in the（）.
Navigational warnings are published according to（）.
Steam smoke will occur when（）.
Many navigational warnings are of a temporary nature，but others remain in force for several months or may be succeeded by（）.