A.deviation
B.variation
C.local attraction
D.All of the above
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A.at close range
B.at end on situation
C.at head on situation
D.at crossing situation
A.to get
B.to approach
C.to proceed
D.to close
A.hard iron
B.soft iron
C.vertical iron only
D.horizontal iron only
A.Rhythm
B.Period
C.Intensity
D.Color
A.Magnetic compass table
B.Magnetic meridians
C.Isogonic lines
D.Variation is not indicated on small-scale nautical charts
最新試題
The heading of a vessel is indicated by what part of the compass? （）
Would you please（）on the radar?
With respect to automatic identification systems（AIS），which information is expected to be broadcast every 1 to 10 seconds（）.
The time interval between the transmission of signals from a pair of Loran-C stations is very closely controlled and operates with（）.
The operation of which aids to navigation may be suspended during war or national emergency（）.
The operator of the ship’s radiotelephone，if the radiotelephone is carried voluntarily，must hold at least a（）.
（）is a digitized“picture”of a chart.
The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found（）.
（）is not a component of GPS.
In using Loran-C，skywave reception gives greater range but is（）.