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1. |
To calculate relative deflections of tangents at point A and B at point B, which part of area should be considered? |
A. | A to B |
B. | A to C |
C. | C to B |
D. | can’t say |
Answer» D. can‚Äö√Ñ√∂‚àö√ë‚àö¬•t say | |