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compensate transform estimate response access analyze strain meansadoptat a disadvantage add totake the leadvisit withaccount for be tied to1. The president said that they were trying to their university into a top school in the country.2. Students in the university have free to the computer lab.3. Many young mothers the home and children.4. We wrote to the manager to complain about the poor service, but received no yet.5. Homework should not be used as a of controlling children.6. The teacher our mistakes in order to help us find the causes.7. Her refusal has the uncertainty of the situation.8. If you want to improve your situation, you must a positive attitude.9. He is so busy that he hardly has time to his friends.10. The team for the first time this season.11. According to the survey, students and children more than 50% of the visitors last year.12. With so many changes, it is very difficult to the exact cost of this project.13. Nothing can for the loss of one’s health.14. His inability to speak English put him in the interview.15. He spoke so softly. I to hear what he was saying.

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钢在一定条件下淬火冷却时,获得马氏体组织深度的能力称为()。

A. 淬硬性
B. 淬透性
C. 耐磨性

钢中加入除CO之外的其他合金元素,一般均能使其C曲线向右移从而()。

A. 增大Vk
B. 增加其淬透性
C. 减小其淬透性
D. 增大其淬硬性

同一钢材在相同条件下,小件比大件的淬透性好

A. 对
B. 错

淬火后硬度不足或出现软点,下列哪些不是主要原因。()

A. 加热温度低
B. 保温时间不充分
C. 加热时钢件表面氧化、脱碳
D. 冷却过快

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