欢迎来到牛牛题库网 牛牛题库官网
logo

未知题型

4. 变形振动分为()和()。

【参考答案】

变形振动分为弹性变形振动和塑性变形振动。

点击查看答案

相关考题

单项选择题
People Use Technology More, Sleep Less People in B...
People Use Technology More, Sleep Less People in Britain now spend more time watching TV, gaming, and using their mobile phones and computers than sleeping. A study(31)_____that British people use technology for 20 minutes longer than they spend sleeping. The average UK adult uses technology for eight hours and 41 minutes a day. They(32)_____for an average of eight hours and 21 minutes. One of the biggest(33)_____for this is wi-fi. People can get online almost(34)_____. Many people make telephone calls or surf the web while watching TV. TV is still the most(35)_____activity. The study looked at technology and(36)_____age groups. It found that six-year-olds understand how to use technology at the same(37)_____as 45-year-olds. Another(38)_____was that people understand digital technology most when they are 14 or 15. A doctor said technology is(39)_____the way people communicate with each other. He said we are moving(40)_____from face-to-face conversations because of technology. _____ A.changing B.reasons C.popular D.found E.anywhere F.down G.finding H.level I.different J.away K.outdoor L.sleep
_____ A.changing B.reasons C.popular D.found E.anywhere F.down G.finding H.level I.different J.away K.outdoor L.sleep
_____ A.changing B.reasons C.popular D.found E.anywhere F.down G.finding H.level I.different J.away K.outdoor L.sleep
_____ A.changing B.reasons C.popular D.found E.anywhere F.down G.finding H.level I.different J.away K.outdoor L.sleep
_____ A.changing B.reasons C.popular D.found E.anywhere F.down G.finding H.level I.different J.away K.outdoor L.sleep
_____ A.changing B.reasons C.popular D.found E.anywhere F.down G.finding H.level I.different J.away K.outdoor L.sleep
_____ A.changing B.reasons C.popular D.found E.anywhere F.down G.finding H.level I.different J.away K.outdoor L.sleep
_____ A.changing B.reasons C.popular D.found E.anywhere F.down G.finding H.level I.different J.away K.outdoor L.sleep
_____ A.changing B.reasons C.popular D.found E.anywhere F.down G.finding H.level I.different J.away K.outdoor L.sleep
_____ A.changing B.reasons C.popular D.found E.anywhere F.down G.finding H.level I.different J.away K.outdoor L.sleep
微信小程序免费搜题
微信扫一扫,加关注免费搜题

微信扫一扫,加关注免费搜题