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解决塔下黑现象的最佳方法是()
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解决塔下黑现象的最佳方法是()
A、采用零点填充天线
B、加大天线下倾角
C、换高增益天线
D、采用宽波束天线
时间:2021-12-27 03:05
关键词:
CDMA1X-EVDO
通信工程师
答案解析
A
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