A.smaller scales
B.larger scales
C.smaller scales and larger scales
D.moderate scales
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A.Mercator charts／Loran charts
B.Admiralty charts／Routeing charts
C.large scale charts／small scale charts
D.small scale charts／large scale charts
A.Plotting radio bearings over a long distance
B.Determining latitude and longitude of a fix
C.Measuring rhumb line distances
D.Measuring rhumb line directions
A.warm front at night
B.low pressure area
C.anticyclone
D.lack of frontal activity
A.in
B.on
C.with
D.by
A.is decreased
B.decreased
C.decreases
D.are decreased
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Which is a weekly publication advising mariners of important matters affecting navigational safety（）.
Many navigational warnings are of a temporary nature，but others remain in force for several months or may be succeeded by（）.
Navigational warnings and weather bulletins for shipping（）from Singapore Radio.
Weekly Notices are dated for the（）appropriate to the week they are issued on the UKHO website.
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（）.
For what purpose would using a Lambert conformal chart be more convenient than using a Mercator?（）
Steam smoke will occur when（）.
LOW AT 34N 135E ESLY SLWLY INTST NC．This description is most likely to be under the heading of（）.
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（）.
SEARCHABLE NOTICES TO MARINERS can be searched by all the following options except（）.