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当前学科:初级炉外精炼工
题目:
单选
炼钢厂中设置混铁炉的主要作用是储存铁水,()。
A . 使用方便
B . 使铁水升温和成分均匀化
C . 使铁水保温、升温
D . 使铁水保温和成分均匀
答案:
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