【判断题】【消耗次数:1】
低合金高强度结构钢与碳素结构钢比较,低合金高强度结构钢的综合性能好( )。
正确
错误
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相关题目
【判断题】 低合金高强度结构钢与碳素结构钢比较,低合金高强度结构钢的综合性能好( )。
①  正确
②  错误
【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
【单选题】 在我国低合金高强度钢主要加入的元素为()
① 
② 
③ 
④ 
【判断题】 低合金钢比碳素结构钢更适合于高层及大跨度结构。
①  正确
②  错误
【判断题】 低合金钢比碳素结构钢更适合于高层及大跨度结构.
①  正确
②  错误
【判断题】 合金结构钢的强度等级是根据(屈服强度)划分的。
①  正确
②  错误
【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
【单选题】 碳素结构钢的Q235C表示( )。
①  屈服强度为235N/mm2,C级沸腾钢
②  屈服强度为235N/mm2,C级半镇静钢
③  屈服强度为235N/mm2,C级镇静钢
④  屈服强度为235N/mm2,C级特殊镇静钢
【单选题】 下列碳素结构钢中含碳量最高的是( )。
①  Q235-AF
②  Q215
③  Q255
④  Q27524
【单选题】 碳素结构钢按照()的下限值将其分为四个级别
①  A.导电率
②  B.屈服强度
③  C.可塑性
④  D.耐磨性
随机题目
【单选题】 6. –Look, someone is coming. Guess who it _____ be?–I think it _____ be Tom.–I don’tthink it _____ be _____.
①  must; can; must; his
②  may; can; must; him
③  must; can; him
④  might; must; can; himself
【单选题】 1. If they ______ to do this work, he might do it some other way.
①  were
②  should
③  will
④  can
【单选题】 8. I______ go to bed until I ______ finished my work last night.
①  Don’t; had
②  didn’t have
③  didn’t; had
④  don’t; have
【单选题】 15.Man _____ die without air or water.
①  will
②  have to
③  must
④  should
【单选题】 16.Let’sclean our classroom, ______?
①  will you
②  dont we
③  shall we
④  do you
【单选题】 7. If it is fine tomorrow, we ______ a football match.
①  have
②  will have
③  has
④  shall has
【单选题】 19. _______hand in his exercise book before Monday.
①  Need he to
②  Does he need
③  Needs he to
④  Need he
【单选题】 9. No sooner _______ he arrived home than he _______to start on another journey.
①  has; was asked
②  have; were asked
③  had; is asked
④  had; was asked
【单选题】 13. Where is my pen? I ______ it.
①  might lose
②  would have lost
③  should have lost
④  must have lost
【单选题】 14. I didn’thear the phone. I ______ asleep.
①  must be
②  must have been
③  should be
④  should have been