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  • 题目: 单选题
    (2012)图示三根压杆均为细长(大柔度)压杆,且弯曲刚度均为EI。三根压杆的临界荷载Fcr的关系为:()

      AFcra>Fcrb>Fcrc

      BFcrb>Fcra>Fcrc

      CFcrc>Fcra>Fcrb

      DFcrb>Fcrc>Fcra

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