【判断题】【消耗次数:1】
在曲柄摇杆机构中,摇杆两极限位置的夹角称为极位夹角。
正确
错误
参考答案:
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相关题目
【判断题】 极位夹角是曲柄摇杆机构中,摇杆两极限位置的夹角。
①  正确
②  错误
【单选题】 曲柄摇杆机构中,摇杆为主动件时,()死点位置。
①  不存在
②  曲柄与连杆共线时为
③  摇杆与连杆共线时为
④  曲柄与机架共线时为
【单选题】 曲柄摇杆机构中,曲柄为主动件时,____为死点位置。
①  曲柄与连杆共线
②  摇杆与连杆共线
③  不存在
【单选题】 拟将曲柄摇杆机构改为双摇杆机构,应取原机构中的______作为机架。  
①  曲柄  
②  连杆  
③  摇杆  
④  机架
【判断题】 在曲柄摇杆机构中,当连杆与曲柄共线时,机构处于死点位置。()
①  正确
②  错误
【判断题】 在曲柄摇杆机构中,当连杆与曲柄共线时,机构处于死点位置。()
①  正确
②  错误
【单选题】 曲柄摇杆机构中,当曲柄为主动件,有()死点位置
①  1个
②  2个
③  3个
④  0个
【单选题】 在曲柄摇杆机构中,只有当 为主动件时,才会出现“死点”位置。
①  连杆
②  机架
③  摇杆
④  曲柄
【判断题】 曲柄的极位夹角θ越大,机构的急回特性也越显著。
①  正确
②  错误
【单选题】 曲柄摇杆的基本特性( )
①  死点位置
②  急回运动
③  摇杆的极限位置和摆角
④  以上为正确答案
随机题目
【单选题】 16.Tom and Jerry both gave good reports, but Tom’s was_____.
①  best
②  the best
③  better
④  the better
【单选题】 18.Hers is _____ as yours.
①  report as good
②  a such good report
③  as good a report
④  so good report
【单选题】 6. What really ______ is that the teacher should be responsible for his students.
①  happens
②  cares
③  minds
④  matters
【单选题】 22. He ran a fever yesterday but feels far __________ today.
①  better
②  Worse
【单选题】 27.He asked me to lend him some money, which I agreed to do, ________ that he paid me back the following week.
①  on occasion
②  on purpose
③  on condition
④  only if
【单选题】 14. His cousin is three years _____ than him.
①  elder
②  oldest
③  older
④  the eldest
【单选题】 23. Mary is just ___________ before. She needs more exercises.
①  pale than
②  as pale as
【单选题】 12. That’s ______ joke I have ever heard.
①  the funniest
②  more funny
③  a funniest
④  funnier
【单选题】 3.We are living in an age where only a strong economy will ____.
①  value
②  cherish
③  count
④  have
【单选题】 31. He was very religious. He used to go to _____ church every Sunday.
①  the
②  a
③  /
④  one