试题与答案

某段管线的规格为:Φ219mm×8mm,长10km,清管球外径为211mm,求该清管

题型:单项选择题

题目:

某段管线的规格为:Φ219mm×8mm,长10km,清管球外径为211mm,求该清管球的过盈量()

A、3.9%;

B、12.5%;

C、6.5%;

D、7.5%。

答案:

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