A.Navigational satellites
B.Loran
C.Omega
D.Any of the above
您可能感興趣的試卷
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
The receiver uses（）satellites to compute latitude，longitude，altitude，and velocity．
The operator of the ship’s radiotelephone，if the radiotelephone is carried voluntarily，must hold at least a（）.
Which statement concerning GPS is TRUE（）.
Automatic identification systems（AIS）are required to（）.
Loran-C is which type of system（）.
Would you please（）on the radar?
Which of the following statements is TRUE regarding crane operations（）.
The heading of a vessel is indicated by what part of the compass? （）
What does not contribute to the commercial GPS receiver position error（）.
When navigating using DGPS（Differential Global Positioning System）you may expect your position to be accurate to within a radius of（）.