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
The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found（）.
The time interval between the transmission of signals from a pair of Loran-C stations is very closely controlled and operates with（）.
The receiver uses（）satellites to compute latitude，longitude，altitude，and velocity．
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（）.
Would you mind（）your DF?
（）is not an alarm required by IMO standards to be available on the ECDIS.
（）is not a factor which will affect the accuracy of GPS receiver.
Which of the following statements is TRUE regarding automatic identification systems（AIS）（）.
The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of（）.
The heading of a vessel is indicated by what part of the compass? （）