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
The fog most commonly encountered at sea is called（）.
The range of a light on Admiralty Charts is normally the（）.
RYUKYU S TO SE 6 BEC 4－5.ISOL SHWRS.SEA 3 M BEC 2 M.SWELL SE 3－4M.This description is likely to be under the heading of（）.
In revised editions of Admiralty charts the（）are corrected first．
Navigational warnings and weather bulletins for shipping（）from Singapore Radio.
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（）.
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（）.
（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.
Navigational warnings are published according to（）.
Information for updating nautical charts is primarily found in the（）.