题目内容

滚动轴承的寿命与基本额定寿命有何区别？按公式L=(C/P)ε计算出的L是什么含义？

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滚动轴承支承的轴系，其轴向固定的典型结构形式有三类：（1）两支点各单向固定：（2）一支点双向固定，另一支点游动：（3）两支点游动。试问这三种类型各适用什么场合？

滚动轴承常见的失效形式有哪些？公式L=(C/P)ε是针对哪种失效形式建立起来的？

1. A cheaper camera is not always ___ to a more expensive one.A. interior B. inferior C. exterior D. superior2. Loneliness can make you feel empty and a sense of _ for someone to really know you.A. asking B. belonging C. longing D. looking3. A strong sense of pride _ over her as she recalled her past glory in her school days.A. wept B. swept C. cried D. poured4. Patience is _, but its fruit is sweet.A. bitterness B. bitter C. bittering D. bittered5. It’s important to show that you are open to teammates’ opinions, but it’s also vital that you _ on your own ideas if you believe in them.A. take B. stick C. fasten D. impose6. No mathematician is_; he may make mistakes, but he must not hedge.A. fallible B. fallacious C. false D. infallible7. He argued with his wife so vehemently that he talked himself_.A. hoarsely B. hoarseness C. hoarse D. hoarsen8. We are certain that he will_his illness.A. come over B. go over C. get over D. give over9. Engineering and technology are disciplines_from one another and from science.A. differ B. distinct C. distinctive D. extinct10. Don't put that cloth over the baby's face, you'll___him!A. smother B. cover C. breathe D. smooth

Whatclever girl she is!

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