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
Charts showing the coast of Mexico are produced by the United States（）.
A chart projection depicting the poles and a small area on either side of a connecting meridian，that is sometimes used for star charts，is the（）.
The maximum difference between mean time and apparent time is （）.
The only cylindrical chart projection widely used for navigation is the （）.
Where would you obtain data on currents for areas of the world not covered by the National Ocean Service（）.
On chart，bearings to near objects should be used in preference to objects farther off，because（）.
What is NOT an advantage of the rhumb line track over a great circle track? （）
When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to （）.
Which aid is NOT marked on a chart with a magenta circle? （）
Particular care is needed when navigating in the vicinity of（）as very few of these features have been fully surveyed to modern standards to determine their correct position，full extent，or the least depth over them.