平面三角形单元三个节点的局部码i、j、k对应的总体编码8、3、5,则单元刚度矩阵中的元素K(下标25)应放入总体刚度矩阵中的
A.第8行,第5列
B.第5行,第8列
C.第9行,第16列
D.第16行,第9列
正确答案是D
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