2010年上海世博会中国馆—“东方之冠”给人强烈的视觉冲击,它的

2010年上海世博会中国馆—“东方之冠给人强烈的视觉冲击,它的主体结构为四根巨型钢筋混凝土制成的核心筒。其中钢属于

A.金属材料      B.硅酸盐材料

C.复合材料      D.有机高分子材料

答案

A

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