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
Automatic identification systems（AIS）are required to（）.
The line connecting the Loran-C master station with a secondary station is called the（）.
The information received by AIS will be displayed on（）.
The loran lines drawn on navigation charts represent（）.
When navigating using DGPS（Differential Global Positioning System）you may expect your position to be accurate to within a radius of（）.
Which of the following statements is TRUE regarding crane operations（）.
Loran-C is which type of system（）.
Radar makes the most accurate determination of the（）.
Which statement concerning GPS is TRUE（）.
The（）transmits own ship data cyclically via two defined VHF channels and receives the same data of the other ships and objects that are equipped with AIS systems.