金属材料中,温室密度最低的是( )。A.镁 B.铅 C.铜 D.铁

作者: rantiku 人气: - 评论: 0
问题 金属材料中,温室密度最低的是( )。
选项 A.镁 B.铅 C.铜 D.铁
答案 A
解析 纯镁的室温密度仅为 是所有金属结构材料中最低的

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