單項(xiàng)選擇題

An ECDIS is required to display which information?（）

A.Soundings
B.Waypoints
C.Meteorological data
D.Radar targets

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單項(xiàng)選擇題

An ECDIS is required to display which information?（）

A.Radar targets
B.ARPA vectors
C.Hydrographic data
D.All of the above

單項(xiàng)選擇題

A tall object with a light on or near the shore，to act as a guide or warning to mariners is called（）.

A.beam
B.radar
C.light beacon
D.reflector