单项选择题
A.sensitivity time control (sea clutter control) B.receiver gain control C.brilliance control D.fast time constant (differentiator)
The radar control that reduces weak echoes out to a lim...
单项选择题The radar control that reduces weak echoes out to a limited distance from the ship is the（）.
A.sensitivity time control (sea-clutter control) B.receiver gain control C.brilliance control D.fast time constant (differentiator)
The officer of the watch should use radar when appropri...
单项选择题The officer of the watch should use radar when appropriate and at all times in（）waters.
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
