单项选择题
图示应力状态点的面内的最大切应力是()。
A.20MPaB.40MPaC.60MPaD.80MPa
A.0,-26.6MPa,-83.4MPaB.26.6MPa,0,-83.4MPaC.83.4MPa,0,-26.6MPaD.83.4MPa,-26.6MPa,0
A.119.2MPa,-10.3MPaB.119.2MPa,-5.3MPaC.219.2MPa,-5.3MPaD.219.2MPa,-10.3MPa