单项选择题
（）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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相关考题
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单项选择题
（）is on the panel of radar.
A.KEYLOCK
B.REPEATER
C.STATIC INVERTER
D.ANTI-CLUTTER-SEA -
单项选择题
（）20 targets can be tracked at one time．When maximum tracking capacity is reached，no further acquisitions are possible.
A.As many as
B.So many as
C.As much as
D.As more as -
单项选择题
What will NOT induce errors into a doppler sonar log?（）
A.Increased draft
B.Pitch
C.Roll
D.Change in trim
