工程流体力学章节测试课后答案2024春

第七章测试

1.What is most likely to be the main driving force in pipe flow? （ ）。
A:Force B:A pressure gradient C:Vacuum D:Gravity
答案:B
2.The nature of pipe flow is ____. （ ）。
A:random B:constant C:strongly dependent on whether the flow is laminar or turbulent D:turbulent 3.In the case of fully developed pipe flow, ____. （ ）。
A:random B:the flow is accelerating at a constant rate. C:the velocity profile is irregular. D:the velocity profile is the same at any cross section of the pipe. 4.Steady, fully developed pipe flow experiences no ____. （ ）。
A:None B:Friction C:Motion D:Acceleration