单项选择题
A.上屈服强度B.下屈服强度C.屈服强度D.抗拉强度
A.10min;400kN;5B.5min;200kN;5C.20min;400kN;5D.15min;400kN;5
A.9.5~13.2mmB.10~16mmC.10~31.5mmD.10~40mm
A.500gB.400gC.300gD.200g
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