A.Notice to Mariners
B.Coast Pilots
C.nautical chart catalogs
D.Sailing Directions
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A.smaller scales
B.larger scales
C.smaller scales and larger scales
D.moderate scales
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
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Which is the correct procedure for anchoring a small to medium size vessel in deep water （）.
What is the most important source of information to be used in correcting charts and keeping them up to date（）.
Periodic publications notifying changes in，or additions to，previously published navigational data are（）.
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 AT 34N 135E ESLY SLWLY INTST NC．This description is most likely to be under the heading of（）.
Steam smoke will occur when（）.
Navigational warnings and weather bulletins for shipping（）from Singapore Radio.
Information for updating nautical charts is primarily found in the（）.
On the high seas，a fog signal consisting of one prolonged blast followed by four short blasts would indicate the presence of a（）.
Section V of the ADMIRALTY NOTICES TO MARINERS is（）.