单项选择题
A.M=74.49kN·m,V=49.75kN B.M=35.98kN·m,V=145.87kN C.M=35.98kN·m,V=74.49kN D.M=35.98kN·m,V=152.13kN
A.Ⅰ、Ⅲ B.Ⅱ、Ⅲ C.Ⅲ、Ⅳ D.Ⅱ、Ⅳ