A.Ground waves
B.Skywaves
C.Either ground waves or skywaves interchangeably
D.An average between ground wave and skywave positions
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A.Focus line
B.Base line
C.Side line
D.Center line
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
最新試題
Which statement concerning GPS is TRUE（）.
The information received by AIS will be displayed on（）.
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.
（）is not a factor which will affect the accuracy of GPS receiver.
The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found（）.
（）is not an alarm required by IMO standards to be available on the ECDIS.
（）is a digitized“picture”of a chart.
The operator of the ship’s radiotelephone，if the radiotelephone is carried voluntarily，must hold at least a（）.
Loran-C is which type of system（）.
To obtain accuracy in fixing by DF，（）and three stations should be used.