A.GALE WARNING
B.24 HOURS FORECAST
C.GENERAL SITUATION
D.TROPICAL CYCLONE WARNING
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A.Notice to Mariners
B.Coast Pilots
C.nautical chart catalogs
D.Sailing Directions
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
最新試題
On the approach of a warm front the barometric pressure usually（）.
The height of a tide can be increased by（）.
Periodic publications notifying changes in，or additions to，previously published navigational data are（）.
What is the significance of the broken magenta lines which roughly parallel the shore between Roanoke Point and Orient Point on Long Island（）.
The Daily Memorandum contains information on（）.
What is the most important source of information to be used in correcting charts and keeping them up to date（）.
On the high seas，a fog signal consisting of one prolonged blast followed by four short blasts would indicate the presence of a（）.
The fog most commonly encountered at sea is called（）.
Many navigational warnings are of a temporary nature，but others remain in force for several months or may be succeeded by（）.
The range of a light on Admiralty Charts is normally the（）.