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【单选题】
在进行建筑地基基础设计时,关于所采用的作用最不利组合与相应的抗力限值的下述内容,不正确?
A.
按地基承载力确定基础底面积时，传至基础的作用组合应按正常使用极限状态下作用的标准组合，相应抗力采用地基承载力特征值
B.
按单桩承载力确定桩数时，传至面上的作用组合应按正常使用极限状态下作用的标准组合，相应抗力采用单桩承载力特征值
C.
计算地基变形时，传至基础底面上的作用组合应按正常使用极限状态下作用的标准组合，相应限值应为相关规范规定的地基变形允许值
D.
计算基础内力，确定其配筋和验算材料强度时，上部结构传来的作用组合及相应的基底反力，应按承载力极限状态下作用的基本组合，采用相应的分项系数
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