试题与答案

适合竖炉使用的铁精矿粉为(),其分子式为Fe3O4。

题型:填空题

题目:

适合竖炉使用的铁精矿粉为(),其分子式为Fe3O4。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:装夹精度;刚性;重型

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