题目内容
测得某管道内部的被测液体平均流速为0.5m/s，密度为1000kg/m3，管道的直径为2m，求：1）管道的截面积A为多少平方米？2）瞬时体积流量qV为每秒多少立方米？3）瞬时质量流量qM为为每秒多少吨？
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Warehouses are large complicated buildings which look like barns.
Transshipment warehouses provide places for the storage of raw materials.
Supply warehouses can be used to store the finished products.
It doesn’t matter for goods to be stored in a warehouse for as long as possible.
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