题目内容（请给出正确答案）

[单选题]

Most elementary metals （about 90%) crystallize upon solidification into three densely packed crystal structures, they are .

A.ACC

B.BCC

C.FCC

D.HCP

提问人：网友sitpretty 发布时间：2022-01-07

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· 有5位网友选择 B，占比62.5%
· 有2位网友选择 C，占比25%
· 有1位网友选择 A，占比12.5%

ABCD

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