A.Navigational satellites
B.Loran
C.Omega
D.Any of the above
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你可能感興趣的試題
A.Ground waves
B.Skywaves
C.Either ground waves or skywaves interchangeably
D.An average between ground wave and skywave positions
A.Focus line
B.Base line
C.Side line
D.Center line
A.DCU
B.UTC
C.ENC
D.MENU
A.AIS
B.ECDIS
C.GPS
D.VDR
A.direction of a target
B.distance to a target
C.size of a target
D.shape of a target
最新試題
With respect to automatic identification systems（AIS），which information is required to be broadcast every 1 to 10 seconds（）.
（）is not a factor which will affect the accuracy of GPS receiver.
Would you mind（）your DF?
Loran-C uses the multiple pulse system because（）.
Which statement concerning GPS is TRUE（）.
Automatic identification systems（AIS）are required to（）.
The time interval between the transmission of signals from a pair of Loran-C stations is very closely controlled and operates with（）.
You are about to go to sea and adjust the magnetic compass．To expedite the adjustment at sea，in what order should the following dockside adjustments be made（）.
The heading of a vessel is indicated by what part of the compass? （）
In using Loran-C，skywave reception gives greater range but is（）.