A.Latitude
B.Longitude
C.Speed
D.Time
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A.deviation
B.variation
C.local attraction
D.All of the above
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
最新試題
The line connecting the Loran-C master station with a secondary station is called the（）.
If the radio signal ground wave extends out for less distance than the minimum skywave distance，there is an area in which no signal is received．This is called the（）.
Which of the following statements is TRUE regarding automatic identification systems（AIS）（）.
Which one of the followings does not limit the effective range of radar（）.
（）is not a component of GPS.
The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found（）.
When navigating using DGPS（Differential Global Positioning System）you may expect your position to be accurate to within a radius of（）.
In using Loran-C，skywave reception gives greater range but is（）.
Radar makes the most accurate determination of the（）.
Loran-C is which type of system（）.