A.Lambert conformal
B.Mercator
C.azimuthal
D.gnomonic
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A.total number of observations
B.average wind force on the Beaufort scale
C.average wind force in knots
D.percentage of calms
A.equal to the longitude expressed in time units
B.about 16 minutes
C.the difference between the GHA of mean sun and the first point of Aries
D.15°of arc
A.radar conspicuous beacon
B.circular radiobeacon
C.radar transponder beacon
D.radar calibration beacon
A.deviation
B.annual rate of variation change
C.precession
D.compass error
A.newly edition with up to date correction and in reasonable prices
B.the current edition and incorporate the last Notices to Mariners correction
C.the current edition and incorporate the latest Notices to Mariners correction at the time of sale
D.brand-new one with up to date correction and clean writing
最新試題
（）is not a position-fixing system.
What information is found in the chart title? （）
Which chart symbol indicates the bottom is clay（）.
When a buoy is in position only during a certain period of the year，where may the dates when the buoy is in position be found?（）
Where would you obtain data on currents for areas of the world not covered by the National Ocean Service（）.
The maximum difference between mean time and apparent time is （）.
A chart position enclosed by a square is a（n）（）.
The short-long dashed magenta line around Gardiners Island marks（）.
Which information does the outer ring of a compass rose on a nautical chart provide（）.
The broken magenta lines（long and short dashes）in and around Mobjack Bay indicate（）.