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【单选题】
长方形截面细长压杆,b/h=1/2;如果将长方形截面改成边长为h的正方形,后仍为细长杆,临界力Fcr是原来的(C)倍。
A.
2倍;
B.
4倍;
C.
8倍;
D.
16倍。
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举一反三
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