A.DCU
B.UTC
C.ENC
D.MENU
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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
A.Bell alarm to warn the user
B.Lighted alarm signal to warn the user
C.Alternate signal keying system
D.View finder for each station
A.Less signal energy is necessary for receiver operation
B.More signal energy is available at the receiver
C.It significantly increases the peak power
D.It increases the signal capacity
A.Reflected electron
B.Electrical radiation
C.Quarterpoint electrical navigation
D.Hyperbolic radio navigation
最新試題
Automatic identification systems（AIS）are required to（）.
The receiver uses（）satellites to compute latitude，longitude，altitude，and velocity．
The information received by AIS will be displayed on（）.
Which one of the followings does not limit the effective range of radar（）.
Which statement concerning GPS is TRUE（）.
（）is not a component of GPS.
The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of（）.
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.
What does not contribute to the commercial GPS receiver position error（）.
In using Loran-C，skywave reception gives greater range but is（）.