(来学网)水轮机调速器给定的转速范围与额定转速的差为()。
  • A.
    (来学网)±0.2%~±0.3%
  • B.
    (来学网)±0.3%~±0.4%
  • C.
    (来学网)±0.1%~±0.2%
  • D.
    (来学网)±0.4%~±0.5%