单项选择题
A.13.32kN*m B.14.55kN*m C.12.39kN*m D.17.43kN*m
A.86.8kN/m B.140kN/m C.57.9kN/m D.35.9kN/m
A.238.6kN*mB.227.6kN*mC.202.3kN*mD.192.5kN*m