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单选

以下无助于抑制干扰源的措施是(42)。

  • A.通过在干扰源回路串联电感或电阻以及增加续流二极管来减小干扰源的du/dt
  • B.在继电器接点两端并接一个RC串联抑制电路
  • C.在可控硅两端并接RC抑制电路
  • D.布线时避免≤90°的折线
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