A.146.71kN B.167.66kN C.175.40kN D.18

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问题 A.146.71kNB.167.66kNC.175.40kND.188.62kN

选项 A.146.71kN
B.167.66kN
C.175.40kN
D.188.62kN

答案 C

解析
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