单项选择题
A.Focus line B.Base line C.Side line D.Center line
The information received by AIS will be displayed on（）....
单项选择题The information received by AIS will be displayed on（）.
A.DCU B.UTC C.ENC D.MENU
The（）transmits own ship data cyclically via two defined...
单项选择题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.
A.AIS B.ECDIS C.GPS D.VDR
Radar makes the most accurate determination of the（）.A....
单项选择题Radar makes the most accurate determination of the（）.
A.direction of a target B.distance to a target C.size of a target D.shape of a target
