卷帘式煤气柜的倍气压力是()mmH20。A、小于400B、250~600C、600~800D、小于1200

卷帘式煤气柜的倍气压力是()mmH20。

  • A、小于400
  • B、250~600
  • C、600~800
  • D、小于1200

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