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问题详情

在铸造生产中,变质剂的熔点要比铸造金属的熔点( )。

A、相等

B、低 

C、<span style="font-size: 16.8px;">高</span>

D、无法比较

时间：2022-04-02 01:50 关键词：大连工业大学机械设计与制造高起专材料力学 21级1学期期末考试

答案解析

C

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