【单选题】【消耗次数:1】
对于细长压杆,压杆的临界力与杆长的平方成()。
正比
反比
无关
参考答案:
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相关题目
【判断题】 细长压杆的临界力与强度指标有关。
①  正确
②  错误
【单选题】 细长压杆的(),则其临界应力σ越大。
①  弹性模量E越大或柔度λ越小
②  弹性模量E越大或柔度λ越大
③  弹性模量E越小或柔度λ越大
④  弹性模量E越小或柔度λ越小
【单选题】 细长压杆承受轴向压力F的作用,与其临界压力Fcr无关的是()。
①  杆的材质;
②  杆的长度;
③  杆所受压力的大小
④  杆的横截面形状和尺寸
【判断题】 细长压杆其他条件不变,只将长度增加一倍,则压杆的临界应力为原来的4倍。
①  正确
②  错误
【多选题】 细长压杆要进行()验算。
①  强度
②  刚度
③  稳定性
【单选题】 细长压杆的轴向压力存在一个临界值,当其轴向压力()临界值时,压杆处于稳定平衡状态。
①  小于
②  等于
③  小于等于
④  大于
【判断题】 细长压杆比同样材料的粗短压杆承载力要小许多。 ()
①  正确
②  错误
【单选题】 压杆属于细长杆,中长杆还是短粗杆,是根据压杆的()来判断的。
①  柔度
②  长度
③  横截面尺寸
④  临界应力
【单选题】 压杆属于细长杆,中长杆还是短粗杆,是根据压杆的( )来判断的
①  临界应力
②  横截面尺寸
③  长度
④  柔度
【判断题】 压杆上的压力等于临界荷载,是压杆稳定平衡的前提。
①  正确
②  错误
随机题目
【单选题】 Good morning, sir. May I help you?
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②  No, I don’t need your help
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【单选题】 I’d like to take you to the coffee house on the corner.
①  Thank you. You shouldn’t’ do that
②  Thanks, I’d like to go with you
③  No, you can’t say so
④  No, no, You can’t do that
【单选题】 He’s determined to finish the job __________ long it takes.
①  no matter
②  however
③  wherever
④  whatever
【单选题】 -- Could I speak to John Harris, please.
①  Oh, how are you
②  I’m John
③  I’m listening
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【单选题】 Why don’t you travel to New York on vacation?
①  I don’t want to go
②  Excuse me, because I can’t
③  I want to, but I haven’t got enough money
④  Because I’m going to school today
【单选题】 Could you help me with my homework, please?
①  No, no way
②  No, I couldn’t
③  No, I can’t
④  Sorry I can’t. I have to go to a meeting right now
【单选题】 Determined to __________ as if everything were normal, he responded with a kind of indifference.
①  carry on
②  account for
③  bring up
④  get through
【单选题】 Mary, your dress is really beautiful. How is John?
①  Thank you very much
②  No, no, John is not bad
③  Thank you. He is fine
④  Don’t say that. It’s ugly. John is good
【单选题】 Excuse me, sir. Where is Dr. Brown’s office?
①  You can’t ask me
②  Pardon? I have no idea
③  Please don’t say so
④  Sorry I don’t know, but you can ask the man over there
【单选题】 a reading lamp on the table.
①  There is
②  There has
③  It is
④  It has