題目內(nèi)容 (請給出正確答案) [主觀題] 對于碳鋼,碳含量小于()為低碳鋼。A.0.35%.B.0.25%.C.0.55%.D.0.60%. 對于碳鋼,碳含量小于()為低碳鋼。A.0.35%.B.0.25%.C.0.55%.D.0.60%. 答案 查看答案 發(fā)布時(shí)間:2021-07-20 收藏