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要测定管中心流体的最大流速，应选用哪种测量仪器测量？

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要测定管中心流体的最大流速，应选用哪种测量仪器测量？

A.U型压差；

B.测速管；

C.孔板流量计；

D.转子流量计；

参考答案:

答案：U型压差；#测速管；

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