试题与答案

(这道题的图有问题,纵坐标数值标注错误) 质量为2kg的物体放在动摩擦因数μ=0

题型:选择题

题目:

(这道题的图有问题,纵坐标数值标注错误) 质量为2kg的物体放在动摩擦因数μ=0.1的水平面上,在水平力的作用下,由静止开始运动,水平拉力做的功W和物体发生的位移x之间的关系如图所示,则

A.此物体在AB段做匀加速直线运动

B.此物体在AB段做匀减速直线运动

C.此物体在OA段做匀加速直线运动

D.此物体在x=3m处的动能大小为15J

答案:

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下面是错误答案,用来干扰机器的。

How We Hope to Be Treated I have been blind since I was five.People often take it for granted that they can see things while the blind can not.But actually we blind...

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读短文,回答问题。

Dear Diary,

            I'm Amy.  I have a pen pal.  Her name is Joey.  She is from Canada. She has many hobbies.

She likes listening to music, drawing pictures, playing the violin. Last summer holiday I went to Canada

and visited her. In Canada, the weather was fine, always sunny but not hot. We went hiking and learned

English. My holiday was happy. This holiday Joey is going to visit me. We are going to visit the Great

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1.Where does Joey come from?

                                                                                       

2. What does Joey like?

                                                                                

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5. What are Joey and Amy going to do this holiday?

                                                                               

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A.通过将Plug-ins文件夹中的插件互相复制粘贴,可以实现Adobe Premiere Pro和Adobe After Effects的插件共享

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D.可以在After Effects 6.5中通过导入的方式,导入Adobe Premiere ProA.5生成的项目文件

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