One of the criteria for high-speed airplanes is that the critical Mach – McqOptions

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1.	One of the criteria for high-speed airplanes is that the critical Mach number should be as high as possible. Therefore, high-speed subsonic airplanes are usually designed with
A.	thick airfoils
B.	thin airfoils
C.	laminar flow airfoils
D.	diamond airfoils
Answer» C. laminar flow airfoils

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