【判断题】【消耗次数:1】
力偶对物体的转动效应,用力偶矩度量而与矩心的位置无关。
正确
错误
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相关题目
【判断题】 刚体上作用力偶的力偶矩大小与矩心的具体位置无关。
①  正确
②  错误
【判断题】 力偶对其所在平面内任一点的矩恒等于力偶矩,而与矩心的位置有关。
①  正确
②  错误
【单选题】 保持力偶矩的大小、转向不变,力偶在作用平面内任意转移,则刚体的转动效应( )。
①  变大
②  变小
③  不变
④  变化,但不能确定变大还是变小
【单选题】 保持力偶矩的大小、转向不变,力偶在作用平面内任意转移,则刚体的转动效应()。
①  变化,但不能确定变大还是变小
②  变大
③  不变
④  变小
【单选题】 空间力偶矩是( )。
①  代数量
②  滑动矢量
③  定位矢量
④  自由矢量
【单选题】 空间力偶矩是()。
①  代数量
②  滑动矢量
③  定位矢量
④  自由矢量
【单选题】 空间力偶矩是()。
①  代数量
②  滑动矢量
③  定位矢量
④  自由矢量
【判断题】 力系简化所得的合力的投影和简化中心位置无关,而合力偶矩和简化中心位置有关。
①  正确
②  错误
【单选题】 力偶对物体的作用效应,决定于( )。
①  力偶矩的大小
②  力偶的转向
③  力偶的作用平面
④  力偶矩的大小,力偶的转向和力偶的作用平面
【单选题】 力偶对物体的作用效应,决定于()。
①  力偶矩的大小
②  力偶的转向
③  力偶的作用平面
④  力偶矩的大小,力偶的转向和力偶的作用平面
随机题目
【单选题】 11 ______, they had no chance of winning.
①  brave as they fought
②  bravely as they fought
③  If they fought bravely
④  Since they fought bravely
【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