1.

If 1, 2; 3, 4; 5, 6 and 7, 8 are the degrees of freedom at nodes 1,2,3 and 4 respectively then the common degrees of freedom for e=1 and e=2 are ____

A. 3 4, 7 8
B. 1 2, 3 4
C. 5 6, 7 8
D. 1 2, 5 6
Answer» B. 1 2, 3 4


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