更多"什么是滑动摩擦"的相关试题:
[填空题]滚动轴承与滑动轴承的根本区别是以______摩擦代替了滑动摩擦。
[单项选择]下列机械零件中,()是一种滑动摩擦的轴承,可承受较大的冲击载荷。
A. 齿轮
B. 蜗轮蜗杆
C. 滚动轴承
D. 滑动轴承
[简答题]
一链条总长为l,质量为m,放在桌面上,并使其下垂,下垂一端的长度为a,设链条与桌面之间的滑动摩擦系数为μ,令链条由静止开始运动,求:
链条离开桌面的过程中,摩擦力对链条所做的功.
[单项选择]“缺少什么培训什么,需要什么培训什么”是( )选择的原则。
A. 课程计划
B. 课程内容
C. 课程时间
D. 课程评估
[简答题]什么是议付什么是付款两者的主要区别是什么
[简答题]什么是明视觉什么是暗视觉它们各有什么特点
[简答题]传说古代是什么人开天什么人造人类什么人画八卦什么人把火带到了人间又是什么人教人类种庄稼并创医药
[简答题]过去你自己做的一件东西
什么东西?
什么时候?
用什么做的?
解释为什么做它?
[简答题]什么是物理设备什么是逻辑设备两者之间有什么区别和联系
[简答题]什么是Stroop效应什么是反应选择你认为两者有关吗为什么
[简答题] 郑州考场:电影
movie
什么电影
关于什么的
从中学到什么
In my spare time, I like watching movies most, and I have already seen Forrest Gump for many times. Every time I watch it, I will get some new things. The most impressive lines is life is like a box of chocolates, you never you never know what you/’re gonna get. Yeah, life is like a journey which is full of unknowns and obstacles. The movie’s beginning is a symbol of the process of life, a feather flying on the sky floating everywhere without directions and was blown by the strong winds. It is a coincidence that the destiny of Forrest reveals the truth of life. When he is a kid, his mother often tells him he is ordinary as everyone. Jenny gives him confidence and their kid is so smart. It is a comedy to some extend. Movie is not a way to relax but also provides us advices