考试
2021-02-25 02:47:13

(单选题)已知一炉钢出钢温降为△T1,钢水吹氩过程温降为△T

题目描述

A1539℃+△T1+△T2+△T3+△T4

B1539℃-△T1-△T2-△T3-△T4

C1539℃+△T4-△T1-△T2-△T3

答案解析

[db:答案解析]

A

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