单项选择题

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

A.detection
B.being detected
C.the detective
D.the detected

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单项选择题

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

单项选择题

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

单项选择题

The common way to obtain your ship’s position is（）.

A.keeping a close watch and lookout
B.taking a radar range and bearing
C.observing a radar target and listening to signals
D.keeping a well clear caution