普通钢元素含量S≤（）%,P≤（）%。A.0.050,0.045

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问题普通钢元素含量S≤（）%,P≤（）%。A.0.050,0.045B.0.045,0.050C.0.035,0.045D.0.045,0.035

选项 A.0.050,0.045
B.0.045,0.050
C.0.035,0.045
D.0.045,0.035

答案 A

解析不知道答案是不是错了,GB/T1499.2-2018规范P8页、GB/T1499.1-2017规范P4页规定S≤0.045%,P≤0.045%

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