社会上一些不法分子以铜锌合�假冒黄�进行诈骗活动为了鉴别黄铜和黄�以下方法可行的是 A观察颜色 B放在水中 C加稀硫酸 D磁铁 Sketch Coloring Page

社会上一些不法分子以铜锌合�假冒黄�进行诈骗活动为了鉴别黄铜和黄�以下方法可行的是 A观察颜色 B放在水中 C加稀硫酸 D磁铁 Template

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tomski社会上一些不法分子以铜锌合�假冒黄�进行诈骗活动为了鉴别黄铜和黄�以下方法可行的是 a观察颜色 b放在水中 coloring

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