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1. |
_ In determining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section drawn in such a way as not to cut more than$? |
A. | Two members with unknown forces of the frame |
B. | Three members with unknown forces of the frame |
C. | Four members with unknown forces of the frame |
D. | Three members with known forces of the frame |
Answer» C. Four members with unknown forces of the frame | |