单项选择题
A.{{*HTML*}}5.60×10<sup>3</sup>kN B.{{*HTML*}}6.65×10<sup>3</sup>kN C.{{*HTML*}}16.08×10<sup>3</sup>kN D.{{*HTML*}}119.70×10<sup>3</sup>kN
A.4800kN?m B.5300kN?m C.5600kN?m D.5900kN?m
A.1/2 B.1 C.2 D.4