A.bearing circle
B.pelorus
C.bearing bar
D.alidade
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A.spider element
B.sensitive element
C.link arm
D.pickup transformer
A.high or low
B.AC or DC
C.strong or weak
D.on or off
A.gyro-compass
B.marine radar
C.DF
D.navigational satellite
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
最新試題
With respect to automatic identification systems（AIS），which information is required to be broadcast every 1 to 10 seconds（）.
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.
The line connecting the Loran-C master station with a secondary station is called the（）.
Which of the following statements is TRUE regarding automatic identification systems（AIS）（）.
The operator of the ship’s radiotelephone，if the radiotelephone is carried voluntarily，must hold at least a（）.
Most modern Loran-C receivers，when not tracking properly，have a（n）（）.
Automatic identification systems（AIS）are required to（）.
The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of（）.
Radar makes the most accurate determination of the（）.
Loran-C is which type of system（）.