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1. |
What is the limitation of the Shield’s expression? |
A. | It can be used when the diameter of a particle (d) is < 6mm and Reynold’s number > 400 |
B. | It can be used only when Reynold’s number > 400 |
C. | It can be used only when the diameter of the particle is < 6 mm |
D. | It can be used when the diameter of a particle is > 6mm and Reynold’s number > 400 |
Answer» E. | |