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The design pressure of a heating pipe network is 1.6Mpa, and its tightness test pressure should be () MpaA.1.4B.1.6C.1.8D.2.0

The design pressure of a heating pipe network is 1.6Mpa, and the tightness test pressure should be ()Mpa

  A.1.4 B.1.6

  C.1.8 D.2.0

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