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單項選擇題

The line connecting the Loran-C master station with a secondary station is called the（）.

A.Focus line
B.Base line
C.Side line
D.Center line

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單項選擇題

The information received by AIS will be displayed on（）.

A.DCU
B.UTC
C.ENC
D.MENU

單項選擇題

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

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