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
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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
A.C
B.Cl
C.Co
D.c
A.Surging
B.Spilling
C.Plunging
D.Converging
最新試題
Where would you obtain data on currents for areas of the world not covered by the National Ocean Service（）.
Which chart symbol indicates the bottom is clay（）.
On chart，bearings to near objects should be used in preference to objects farther off，because（）.
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.
When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to （）.
Which information is found in the chart title（）.
That the scale of any part of a chart to be larger than the scale of the survey is（）.
What information is found in the chart title? （）
Every chart is liable to be incomplete（）.
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（）.