A.My using
B.I use
C.To use
D.I will use
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A.Rate of turn
B.Latitude and longitude
C.Navigational status
D.All of the above
A.Call sign and IMO number
B.Course over ground and MMSI
C.MMSI number and call sign
D.Route Plan and navigational status
A.A decreasing reading on loran pair 9960-X
B.The bearing of Wolf Trap Light changing to the right
C.Increasing soundings
D.The bearing of Wolf Trap Light changing to the left
A.It cannot be used in all parts of the world
B.There are 12 functioning GPS satellites at present
C.It may be suspended without warning
D.Two position lines are used to give a 2D fix
A.Pulse width
B.Pulse repetition frequency
C.Peak power
D.Target brightness
最新試題
Most modern Loran-C receivers,when not tracking properly,have a(n)().
Automatic identification systems(AIS)are required to().
()is not a component of GPS.
Would you mind()your DF?
Loran-C is which type of system().
In using Loran-C,skywave reception gives greater range but is().
Which one of the followings does not limit the effective range of radar().
Radar makes the most accurate determination of the().
()is not a factor which will affect the accuracy of GPS receiver.
With respect to automatic identification systems(AIS),which information is expected to be broadcast every 1 to 10 seconds().