A.Focus line
B.Base line
C.Side line
D.Center line
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A.DCU
B.UTC
C.ENC
D.MENU
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
最新試題
With respect to automatic identification systems（AIS），which information is expected to be broadcast every 1 to 10 seconds（）.
（）is a digitized“picture”of a chart.
Which of the following statements is TRUE regarding automatic identification systems（AIS）（）.
The line connecting the Loran-C master station with a secondary station is called the（）.
The information received by AIS will be displayed on（）.
What does not contribute to the commercial GPS receiver position error（）.
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（）.
Loran-C uses the multiple pulse system because（）.
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.
Which statement concerning GPS is TRUE（）.