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
On a nautical chart，the inner ring of a compass rose indicates（）.
Steam smoke will occur when（）.
Which is a weekly publication advising mariners of important matters affecting navigational safety（）.
The range of a light on Admiralty Charts is normally the（）.
Navigational warnings are published according to（）.
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 broken magenta line which runs parallel to the shorebetween Roanoke Point and Mattituck Inlet marks a（）.
Navigational warnings and weather bulletins for shipping（）from Singapore Radio.
The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.
What is the most important source of information to be used in correcting charts and keeping them up to date（）.