氧化炉点火后,在规定时间内NH4+含量应降至()mg/L,否则重新点火。A、500B、150C、10D、50

氧化炉点火后,在规定时间内NH4+含量应降至()mg/L,否则重新点火。

  • A、500
  • B、150
  • C、10
  • D、50

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