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
Loran-C is which type of system（）.
（）is not a component of GPS.
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（）.
Which of the following statements is TRUE regarding crane operations（）.
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.
The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found（）.
In using Loran-C，skywave reception gives greater range but is（）.
Which statement concerning GPS is TRUE（）.
The time interval between the transmission of signals from a pair of Loran-C stations is very closely controlled and operates with（）.
While you are at anchor，what will serve as a positive warning that you are drifting towards the wrecks located to the NW and SW of your 2215 position（）.