The fitting of an efficient radar reflector is likely to considerably increase the ship’s probability of（）.

The description Racon beside an illustration on a chart would mean a（）.

A.radar transponder beacon
B.radar conspicuous beacon
C.radar calibration beacon
D.circular radiobeacon

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The correct method of switching off a marine radar is to turn power switch to（）position first，then to（）position.

A.off／standby
B.standby／off
C.standby／close
D.close／standby

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