以速度水平抛出一物体,当其竖直分位移与水平分位移大小相等时,此物体的 [ ] A

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问题:

以速度水平抛出一物体,当其竖直分位移与水平分位移大小相等时,此物体的 [ ]

A.竖直分速度等于水平分速度

B.瞬时速度为

C.运动时间为

D.运动的位移大小是

考点:平抛运动
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What is your favorite color? Do you like yellow, orange, or red? If you do, you must be an optimist ( 乐观派),a leader, or an active person who enjoys life, people and excitement. Do you prefer gray or blue?    小题1:   If you love green, you are strong- minded and determined. __小题2:___  At least this is what psychologists tell us, and they should know, because they have been seriously studying the meaning of color preference, and the effect that colors have on human beings.

_小题3:____ A yellow room makes us feel more cheerful and more comfortable than a dark green one, and a red dress brings warmth and cheer to the saddest winter day. __小题4:__  Light and bright colors make people not only happier but also more active. It is a fact that factory workers work better, harder, and have fewer accidents when their machines are painted orange rather than black or dark gray.

Remember, then, that if you feel low, you can always brighten your day or your life with a new shirt or a few colorful things.   小题5:   And don’t forget that anyone can guess your character when you choose a piece of handkerchief or a lampshade.( 灯罩)

A.You wish to succeed and want other people to see you are successful.

B.Remember also that you will know your friends and your enemies better when you find out what colors they like and dislike.

C.No one can choose his color preference in his life.

D.Color preference can help you see through your enemies.E. Different colors have different effects.

F. On the other hand , black is depressing.

G. Then you are probably quiet, shy and you would rather follow than lead.

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通常一台计算机要接入互联网,应该安装的设备是( )。

A) 网络操作系统
B) 调制解凋器或网卡
C) 网络查询工具
D) 浏览器

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下列哪一个是商业银行()

A.中国进出口银行

B.中国银行

C.邮政储蓄机构

D.国家开发银行

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在SWOT分析中,将企业优势与市场机会关联考虑后制定的战略属于()。

A、转换战略

B、战略窗口

C、匹配战略

D、竞争优势战略

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生态平衡。

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