单项选择题
A.congesting B.congested C.congestion D.congest
The fitting of an efficient radar reflector is likely t...
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
The description Racon beside an illustration on a chart...
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
The correct method of switching off a marine radar is t...
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
