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24252

A. 11
B. 122
C. 11
D. 178

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Two fluid flow patterns are ______ and ______ . Reynolds number can be used to judge the flow pattern. The expression of Reynolds number in circular pipe is Re=______ . And the corresponding critical value of Re is ______ .

The force acting on the fluid can be divided into two types, including ______ and ______ .

What kind of approach can be used to describe fluid flow in fluid dynamics?

A. Lagrangian approach
B. Reynolds approach
C. Bernoulli approach
D. Eulerian approach

In approximate models, ( ) is widely used in model experiments about oil flow.

A. Froude model
B. Reynolds model
C. Euler model
D. Complete similitude model

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