It is required that______should be used during the poor visibility if the radar’s screen shows heavy sea returns．
A.Gain Control
B.Brilliant Control
C.Anti-clutter Sea Control
D.Sweep Intercept
正确答案：C
海浪抑制应用于能见度不良期间雷达屏幕海浪回波严重时
Itisrequiredthat______shouldbeusedduringthepoorvisi
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