(来学网)变压器油的绝缘要求不能低于
  • A.
    (来学网)3.5kV/2.5mm
  • B.
    (来学网)25kV/2.5mm
  • C.
    (来学网)20kV/2.5mm
  • D.
    (来学网)15kV/2.5mm
  • E.
    (来学网)10kV/2.5mm