单项选择题

为提高轴心压杆的整体稳定，在杆件截面面积不变的情况下，杆件截面的形式应使其面积分布__________。 A.
尽可能集中于截面的形心处  B.
尽可能远离形心 C.
任意分布，无影响 D.
尽可能集中于截面的剪切中心

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