单选题The radar control that shortens all echoes on the display and reduces clutter caused by rain or snow is the（）.Asensitivity time control (sea clutter control)Breceiver gain controlCbrilliance controlDfast time constant (differentiator)
单选题
The radar control that shortens all echoes on the display and reduces clutter caused by rain or snow is the（）.
A
sensitivity time control (sea clutter control)
B
receiver gain control
C
brilliance control
D
fast time constant (differentiator)
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