多选题:钢结构的主要特点有(  )。

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题目内容:
钢结构的主要特点有(  )。 A.材质均匀,材料强度高
B.制造简便,施工方便,工业化程度高
C.钢材焊接性良好,可满足制造各种复杂结构形状的连接需要
D.耐腐蚀性好,不易锈蚀
E.钢材耐热且防火
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