题目内容

In the following options, which condition can be used to realize a equivalent stability about two principal axes for an axial compression member ().

A. The lengths of the member about the two principal axes are equal
B. The calculated length about the two principal axes are equal
C. The slenderness ratio about the two principal axes are equal
D. The geometric dimension about the two principal axes are equal

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A. φa≤φb≤φc
B. φb≤φa≤φc
C. φc≤φb≤φa
D. Can't judge

A. Strength
B. Stiffness
C. Global stability
D. Local stability

A. Strength checking
B. Global stability checking
C. Local stability checking
D. Stiffness checking

A. Slenderness ratio
B. Deflection at the mid-span
C. Width-to thickness ratio
D. The length of the member