問題：It is yield as bauxite.<br /><br />It is the third element in clarke number.<br /><br />Its mixed metal is used in airplane.<br /> 出題元【Elements】

出題元【Elements】

問題

It is yield as bauxite.<br /><br />It is the third element in clarke number.<br /><br />Its mixed metal is used in airplane.<br />

Ｑ：It is yield as bauxite.<br /><br />It is the third element in clarke number.<br /><br />Its mixed metal is used in airplane.<br />

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