A.gyro-compass
B.marine radar
C.DF
D.navigational satellite
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A.two stations，including one on the nearest coast
B.two stations，including one on the nearer coast
C.three stations，including one on the farthest coast
D.three stations，including one on the nearest coast
A.parallel bearings
B.long-range bearings
C.short-range bearings
D.cross bearings
A.their transmitters
B.their receivers
C.their radars
D.their lorans
A.if
B.how
C.when
D.where
A.radar
B.omega
C.satellite navigator
D.DF
最新試題
When your vessel is proceeding to the area of traffic density，（）is used to determine the exact ranges of other ships or objects in the vicinity.
To obtain accuracy in fixing by DF，（）and three stations should be used.
Most modern Loran-C receivers，when not tracking properly，have a（n）（）.
（）is not an alarm required by IMO standards to be available on the ECDIS.
The receiver uses（）satellites to compute latitude，longitude，altitude，and velocity．
Which of the following statements is TRUE regarding automatic identification systems（AIS）（）.
Which of the following statements is TRUE regarding crane operations（）.
（）is a digitized“picture”of a chart.
In using Loran-C，skywave reception gives greater range but is（）.
Which statement concerning GPS is TRUE（）.