单选题The radar component that produces the synchronizing signal and triggers the indicator sweep is which of the following?（）.AtransmitterBantenna systemCindicatorDmodulator
单选题
The radar component that produces the synchronizing signal and triggers the indicator sweep is which of the following?（）.
A
transmitter
B
antenna system
C
indicator
D
modulator
参考解析
解析：
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