单选题（）should be used during the poor visibility if the radar’s screen shows heavy sea returns.AGain ControlBBrilliant ControlCAnti-clutter Sea ControlDSweep Intercept
单选题
（）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
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