含碳量大于()为高碳钢。A.0.50%B.0.55%C.0.60%D.0.65%
含碳量大于()为高碳钢。
A.0.50%
B.0.55%
C.0.60%
D.0.65%
相关考题:
高碳钢是指钢中碳含量大于多少()A.0.60%B.0.55%C.0.70%D.0.61%
含碳量大于()为高碳钢。
A.0.50%
B.0.55%
C.0.60%
D.0.65%