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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
The loran lines drawn on navigation charts represent（）.
The heading of a vessel is indicated by what part of the compass? （）
In using Loran-C，skywave reception gives greater range but is（）.
Loran-C uses the multiple pulse system because（）.
With respect to automatic identification systems（AIS），which information is required to be broadcast every 1 to 10 seconds（）.
The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of（）.
The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found（）.
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.
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（）.
With respect to automatic identification systems（AIS），which information is expected to be broadcast every 1 to 10 seconds（）.