【单选题】【消耗次数:1】
轴力和弯矩是对称内力,剪力是反对称内力。( )
正确
错误
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相关题目
【单选题】 如果结构对称、荷载反对称,则轴力图、弯矩图反对称,剪力图对称,在对称轴上轴力、弯矩均为( )。
①  3
②  1
③  2
④  0
【单选题】 如果结构对称、荷载反对称,则轴力图、弯矩图反对称,剪力图对称,在对称轴上轴力、弯矩均为零。( )
①  正确
②  错误
【单选题】 对称结构在反对称荷载作用下,内力图中为正对称的是( )。
①  弯矩图
②  轴力图
③  弯矩图、剪力图和轴力图
④  剪力图
【单选题】 对称结构在反对称荷载作用下,内力图中为正对称的是( )。
①  剪力图
②  弯矩图、剪力图和轴力图
③  轴力图
④  矩图
【判断题】 静定平面桁架中杆件内力有弯矩、轴力和剪力。
①  正确
②  错误
【判断题】 刚架内杆件的截面内力有弯矩、轴力和剪力。
①  正确
②  错误
【判断题】 对称结构在正对称荷载作用下,其内力和位移都是正对称的,且在对称轴上反对称的多余力为零。( )
①  正确
②  错误
【判断题】 若在结构对称的梁上作用有反对称载荷,则该梁具有对称的剪力图和反对称的弯矩图。
①  正确
②  错误
【判断题】 轴力是沿着杆件轴线方向的内力。
①  正确
②  错误
【判断题】 轴力是指沿着杆件轴线方向的内力。
①  正确
②  错误
随机题目
【单选题】 15. She had ____ to do, so she was free.
①  something
②  anything
③  everything
④  nothing
【单选题】 Could you ____ me a favor by shutting the door?
①  do
②  help
③  get
④  give
【单选题】 The students were all entertained in a Mexican restaurant, at Professor Brians ____.
①  money
②  pay
③  expense
④  loss
【单选题】 17. A survey was carried out on the death rate of new-born babies in that region, ____were surprising.
①  as results
②  which results
③  the results of it
④  the results of which
【单选题】 Every morning Mr. Smith takes a ____walk to his office.
①  20 minute
②  20 minutes
③  20-minutes
④  20-minute
【单选题】 20. She never sang, ____ dance.
①  or she ever did
②  or did she ever
③  nor did she ever
④  nor she ever did
【单选题】 He was ____ in his work and didn’t hear me come in.
①  critical
②  logical
③  typical
④  absorbed
【单选题】 In English some surnames ____ occupations or people. ?
①  deserve ?
②  desire ?
③  design ?
④  describe?
【单选题】 18. At thirty-three he ____ the chance of a new start in computer business.
①  declared
②  lifted
③  spared
④  seized
【单选题】 Peter: It’s such a nice warm day. I think I’ll go out for a walk. Dave: ____
①  It is warm to take a walk.
②  Yes. It is warm today.
③  I’d like to join you.
④  Yes. Everybody likes this weather.