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Where is the TX reference point? （）
A:Where the jumper cable is connected to the output of the TX.
B:Where the jumper cable is connected to the RBS.
C:Where the jumper cable is connected to the output of the combiner.
D:Where the jumper cable is connected to the antenna.
E:Immediately outside the antenna.

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出自：中国移动网络维护生产岗位

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