单选题Radar beacons are transmitters designed to produce a（）on the screens of ship’s radar sets.Aincorrect imageBdistinctive imageCpictorial imageDpictographic image
单选题
Radar beacons are transmitters designed to produce a（）on the screens of ship’s radar sets.
A
incorrect image
B
distinctive image
C
pictorial image
D
pictographic image
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