问题
单项选择题
化工管道设计中，关于管径的选择关系到经济问题，所选的管径应该使整体生产成本最低。在没有可靠的经济数据的条件下，可以使用一些经验数据来确定管径。下面的经验（）更合理。
A．所输送流体的密度越小，经济流速越快
B．所输送流体的密度越小，经济流速越慢
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
化工管道设计中，关于管径的选择关系到经济问题，所选的管径应该使整体生产成本最低。在没有可靠的经济数据的条件下，可以使用一些经验数据来确定管径。下面的经验（）更合理。
A．所输送流体的密度越小，经济流速越快
B．所输送流体的密度越小，经济流速越慢
参考答案：A
| 阅读下列短文，选择可以填入空白处的最佳选项。 | |||
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