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放大器功率放大倍数为100，问功率增益是多少分贝()

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放大器功率放大倍数为100，问功率增益是多少分贝()

  • A.10dB
  • B.20dB
  • C.30dB
  • D.40dB

参考答案:

B

暂无解析

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