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单选题
634.DME的组成包括: DME consists of:
A
两根天线和两部询问机 Two antennas and two interrogator
B
一根天线和一部询问机 one antenna and one interrogator
C
两根天线和一部询问机 Two antennas and one interrogator
答案解析
正确答案：A
解析：
题目解析
DME的组成包括: DME consists of: A. 两根天线和两部询问机 Two antennas and two interrogator B. 一根天线和一部询问机 one antenna and one interrogator C. 两根天线和一部询问机 Two antennas and one interrogator 答案:A
解析：DME（距离测量设备）通常由两根天线和两部询问机组成。一根天线用于发送信号，另一根用于接收信号，而每个天线都有一个相应的询问机。这是为了确保双向通信和测量距离。因此，正确答案是A，两根天线和两部询问机。
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