一、知识体系＿冶铁历史及我国的钢铁工业发展与现状二、典型题例析例1下列说法不正确的是（）。（A）球墨铸铁有时可以代替钢，用于铸造和机械加工（B）盛水铁桶最易生锈的部位是水面附近（C）生铁是含杂质很多的铁合金（D）炼钢主要设备有电炉、平炉和转炉解析由铁的化学性质 First, the knowledge system _ metallurgical history and the iron and steel industry in China’s development and status quo Second, the typical example of the case 1 The following statement is incorrect (). (A) Ductile iron can sometimes be used as a substitute for steel for casting and machining (B) Water buckets are most likely to rust. (C) Pig iron is a ferroalloy with a lot of impurities (D) Steelmaking equipment There are Furnace, open hearth and converter analysis of the chemical properties of iron