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（）is not a job of the radar antenna.

A、To receive the high-frequency pulses from the transmitter

B、To focus the pulses into a beam，and send them into space

C、To pick up reflected pulses coming from objects that have been struck by the beam

D、To reflect microwave

时间：2022-01-04 09:16 关键词：雷达及ARPA的使用

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