【判断题】【消耗次数:1】
碳素钢的牌号越大,其强度越高,塑性越好。
正确
错误
参考答案:
复制
纠错
相关题目
【单选题】 造船用的碳素钢属于()
①  普通质量碳素钢
②  优质碳素钢
③  特殊质量碳素钢
④  以上都不是
【单选题】 工程用碳素钢,其含碳量均为( )。
①  小于0.25%
②  小于0.52%
③  小于0.6%
④  大于0.25%,小于0.52%
【单选题】 碳素钢按屈服点、质量等级及脱氧方法划分为若干个牌号,随牌号提高,钢材的( )。
①  强度提高,伸长率提高
②  强度提高,伸长率降低
③  强度降低,伸长率降低
④  强度降低,伸长率提高
【单选题】 普通碳素钢强化阶段的变形是()。
①  完全弹性变形
②  完全塑性变形
③  弹性成分为主的弹塑性变形
④  塑性成分为主的弹塑性变形
【判断题】 随含碳量提高,碳素结构钢的强度、塑性均提高。
①  正确
②  错误
【判断题】 钢的碳当量越高,其焊接性能越好。
①  正确
②  错误
【单选题】 在碳素钢成分中掺入合金元素的作用是
①  改善性能
②  提高塑性
③  提高强度
④  提高硬度
【判断题】 在大跨度、承受动荷载和冲击荷载的结构中使用碳素钢要比使用低合金高强度结构钢节约钢材20%~30%。( )
①  正确
②  错误
【判断题】 珠光体的片层间距越小,其强度越高,其塑性越差。
①  正确
②  错误
【判断题】 伸长率越大,钢材的塑性越好。
①  正确
②  错误
随机题目
【多选题】 Department stores usually___________ customers with various kinds of goods.
①  match
②  service
③  supply
④  provide
【多选题】 Thats beautiful, but___________ .
①  its too bad
②  its too expensive
③  it costs too much
④  the price is too high
【多选题】 You can train yourself to remember better. Here are some_________ .
①  ideas
②  suggestions
③  information
④  furniture
【多选题】 They told us that the company_______________ the law.
①  obey
②  obeyed
③  dont break
④  didnt break
【多选题】 A: I have a headache. I feel weak and tired.B: You ___________ go to see a doctor.
①  should
②  should not
③  had better
④  had better not
【多选题】 The quality of childrens program is___________ important.
①  especially
②  particularly
③  extremely
④  impossibly
【单选题】 Thats the main reason_________ the development of adult education.
①  as
②  why
③  for
④  across
【单选题】 That was a good idea and the government finally_________ it.
①  delivered
②  sold
③  bought
④  accepted
【单选题】 Everyone gets older, but you look ______ than ever.
①  young
②  younger
③  youngest
④  more young
【单选题】 His new book___ next month.
①  will be published
②  is publishing
③  is being published
④  has been published