問題詳情
5.Air flow steadily belween Iwo sections in a long, straight portion of 4-inch inner diameter pipe as shown in the diagram. The uniformly distributed temperature and pressure at each section are given, [f the average air velocity (non-uniform distribution) at section (2) is l000ft/s, please calculate the average air velocity at section (1).(20%)
參考答案
答案：B
難度：非常簡單0.93757
統計：A(7),B(841),C(5),D(8),E(0)