【判断题】【消耗次数:1】
对金属进行冷,热加工都会产生加工硬化。
正确
错误
参考答案:
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相关题目
【判断题】 汽车钣金件的修复方法采用冷加工容易产生加工硬化,所以采用热加工为宜
①  正确
②  错误
【判断题】 冷塑性变形要出现加工硬化,热塑性变形实际也出现过加工硬化,但因温度较高,很快发生了再结晶,最终使加工硬化不明显了。
①  正确
②  错误
【单选题】 加工硬化现象产生的主要原因是()。
①  晶粒破碎细化
②  位错密度增加
③  晶粒择优取向
④  形成纤维组织
【判断题】 正确使用火焰和温度是热加工法矫正钢结构变形的关键。
① 
② 
【判断题】 汽车钣金件的修复方法有冷加工和热加工,一般情况下最好采用冷加工
①  正确
②  错误
【单选题】 散热和除尘能力,适应于中型以上的热加工厂房。
①  矩形和山形
②  矩形和方形
③  方形和L形
④  L形
【单选题】 工件材料的物理力学性能、加工硬化功能、化学成分和热处理状态,都会对切削力产生影响,该说法( )
①  正确
②  错误
【判断题】 在普通钢结构中常用冷加工硬化来提高钢材强度。(  )
①  正确
②  错误
【简答题】 按生产状况,工业建筑可归纳为热加工车间;冷加工车间;[填空(1)]和[填空(2)]四种基本类型
【判断题】 钢筋进行冷拉处理,是为了提高其加工性能。 ()
①  正确
②  错误
随机题目
【单选题】 15. She suffered great mental_____ after her husband died, and as a result she became mad.
①  anger
②  . discomfort
③  unhappiness
④  anguish
【单选题】 18. Strong feelings _____ within him.
①  opened
②  . welled up
③  rose up
④  confronted
【单选题】 13. The supervisor appreciates ______ so hard in the office.
①  for your working
②  your working
③  you to work
④  for you to work
【单选题】 10. ______, he was unable to make much progress.
①  Hard as he tried
②  Though hard as he tried
③  He tried hard
④  Because he tried hard
【单选题】 6. She felt herself ______ by the wind.
①  lift
②  lifting
③  has been lifted
④  lifted
【单选题】 9.She does not_____ that she owes the money, but she just wouldn’t like to return it.
①  argue
②  . dispute
③  think
④  agree
【单选题】 9. By 2008, Beijing ______ its total discharge of pollutants.
①  will reduce
②  will have reduced
③  reduces
④  has reduced
【单选题】 5. The children were seen _______ musical instruments across the street.
①  play
②  to play
③  playing
④  played
【单选题】 8. ______, he was honest.
①  As he was poor
②  Being poor
③  Poor as he was
④  He was poor
【单选题】 12. I’m very sorry to have _______ you with so many questions on such an occasion.
①  interfered
②  offended
③  impressed
④  bothered