题目内容

屈服强度表征材料开始发生塑性时的应力。()

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优质碳素结构钢的钢号用平均含碳量的千分数表示。()

采用整体淬火的热处理方法,可以显著提高灰铸铁的机械性能。()

For this part, you are allowed 30 minutes to write A Letter Applying for a Job to a company. You should write at least 120 words and pay attention to the form. of the letter. Your letter should include the following contents:
1. 你为什么对经理助理这个职位感兴趣
2.你具备哪些能力以胜任这项工作

T12钢是优质碳素结构钢。()

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