37 下圖中柱體之最小臨界挫曲荷重為:

phpZFqYh1
(A) php5PjtnY
(B) phpYXDIIK
(C) phpdI2NSj
(D)php1fv0X2

答案:登入後查看
統計: A(1), B(0), C(0), D(0), E(0) #1622610