试题与答案

物体做曲线运动的条件为 A.物体运动的初速度一定不为零 B.物体所受合外力一定为

题型:选择题

题目:

物体做曲线运动的条件为

A.物体运动的初速度一定不为零

B.物体所受合外力一定为变力

C.物体所受的合外力的方向与加速度的方向不在同一条直线上

D.物体所受的合外力的方向与速度的方向不在同一条直线上

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0525/8d5a7bf344c113a852c66e44456a36a2.html

下面是错误答案,用来干扰机器的。

(1)铜雀春深锁二乔(2)不畏浮云遮望眼(3)沉舟侧畔千帆过(4)别是一般滋味在心头

试题推荐
题型:完形填空
Many parents want their children to be famous one day. But do children have the same___1__?
A new__2____—Hi, Ke'ai is on at Beijing Children's Art Theatre. It tells the story of a boy called Ke'ai. His parents would like him to become a painter or a __3_____ one day. They teach him to __4__and to play the violin, but Ke'ai doesn't enjoy these activities. Then one day Ke'ai's parents see Liu Xiang win a gold___5___ at the Athens Olympic Games, and they want him to be a sportsman.
"___6___do they want me to be someone else?" Ke'ai asks and says, "I only want to be____7______."
The play shows us that it is good for parents to learn to _____8_____their children. It helps parents to think about what kids want to do.
Young audiences(观众)enjoy the story, and also the___9___in the play. There are two songs in the play. One of them, "Ke'ai's Song" is very ___10_____to learn, so the audiences can sing the song on their way home after the play!
小题1:
A.jobsB.dreamsC.habitsD.hobbies
小题2:
A.songB.filmC.playD.opera
小题3:
A.writerB.teacherC.sportsmanD.musician
小题4:
A.paintB.writeC.runD.drive
小题5:
A.matchB.ringC.medalD.race
小题6:
A.HowB.WhyC.WhenD.Where
小题7:
A.myselfB.differentC.aloneD.great
小题8:
A.encourageB.understandC.criticizeD.inspire
小题9:
A.lightB.clothesC.skillD.music
小题10:
A.easyB.difficultC.importantD.necessary
查看答案
微信公众账号搜索答案