已知突然扩大管道突扩前后管段的管径之比，则突扩前后断面平均流速之比（）。 -题库考试答案搜索网

已知突然扩大管道突扩前后管段的管径之比，则突扩前后断面平均流速之比（）。

单选题

2021-07-17 23:36

A、4
B、2
C、1
D、0.5

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正确答案

A

试题解析

标签：新能源科学与工程专升本流体机械基础 2019级第三学期期末考试给排水工程技术高起专水泵风机与站房给排水科学与工程 2019级毕业清考（考试分）清考

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