题目内容：
材料强度的设计值现行规范规定为？
A.材料强度的平均值
B.材料强度的标准值
C.材料强度的标准值除以材料分项系数
D.材料强度的平均值减去标准差
参考答案：
选择题：材料强度的设计值现行规范规定为？
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