A. A cross-section under pure torque: a) is characterized by Oz stress components and not Tzx, Tzx stress components; b) is characterized by Tzx, Tzx stress components and not Oz stress components; c) is characterized by Tzx, Tzx stress components and σz stress components and not. B. Mohr's circles are a graphic representation of: a) the stress state in a point of a continuum; b) the strain state in a point of a continuum; c) the displacement field in a point of a continuum. C. The Virtual Work Theorem holds for: a) rigid structures; b) deformable structures; c) only beam systems (frames).

A. A cross-section under pure torque: a) is characterized by Oz stress components and not Tzx, Tzx stress components; b) is characterized by Tzx, Tzx stress components and not Oz stress components; c) is characterized by Tzx, Tzx stress components and σz stress components and not. B. Mohr's circles are a graphic representation of: a) the stress state in a point of a continuum; b) the strain state in a point of a continuum; c) the displacement field in a point of a continuum. C. The Virtual Work Theorem holds for: a) rigid structures; b) deformable structures; c) only beam systems (frames).