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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
Which one of the followings does not limit the effective range of radar（）.
To obtain accuracy in fixing by DF，（）and three stations should be used.
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.
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（）.
With respect to automatic identification systems（AIS），which information is expected to be broadcast every 1 to 10 seconds（）.
（）is not a component of GPS.
The heading of a vessel is indicated by what part of the compass? （）
Would you please（）on the radar?
The time interval between the transmission of signals from a pair of Loran-C stations is very closely controlled and operates with（）.