检修多级泵轴弯曲度大于标准时，要进行校直，校直时采用（）进行直轴。 A.车床 B

欧洲开发的全球卫星定位系统“伽利略计划”进入部署和使用阶段.“伽利略计划”将发射30颗卫星，全球卫星定位系统采用的是“移动卫星”，它与电视转播用的“地球同步卫星”不同.同步卫星的轨道平面与地球赤道平面重合，离地面的高度只能为一确定的值，移动卫星的轨道离地面的高度可以改变，相应转动周期也可以不同.设某移动卫星通过地球的南、北两极的圆形轨道运行，离地面的高度为h.已知地球半径为R，地球表面的重力加速度为g,则该移动卫星连续两次通过地球赤道上空的时间间隔为_____________.

阅读理解。

     In my thirty years as a Time Management speaker, I have observed a lot of what we can and should

not do to increase our daily result. Time Management is not necessarily working harder, but quicker and

smarter. Sometimes our mistakes will keep us from running at a full pace. Here are the top four Time

Management mistakes we should all avoid to help us to increase our daily success.

     a). Start your day without a plan of action. If so, you will have worked hard but may not have done

enough of right things. Time Management is not doing the wrong things quicker. Time Management is

doing the right things.

     b). Work with a messy(杂乱的) desk or work areas. Studies have shown that the person who works with a messy desk spends one and a half hours per day looking for things. If you have ever visited the

office of a top manager, who is working with a clean desk environment, you will find that the manager

works effectively(有效地).

     c). Don't get enough sleep. Studies show that nearly 75% of us complain on a regular basis, all

throughout our days, that we are tired. For most people, they get the quantity of sleep, but they lack the

quality of sleep. Their days are filled with so much stress that they are out of control, working harder but

maybe not smarter, that it's difficult to get a full night's sleep.

     d). Don't take a lunch break. Many do not take a lunch break, working through that period in the

hopes that it will give them more time to produce results. Studies have shown it may work just the

opposite. After doing what we do for several hours, we start to feel tired. A lunch break, even short,

gives us a chance to get our energy back again.

1. The purpose of this passage is to __________.

A. show how to become a speaker

B. explain the importance of Time Management

C. persuade us to get rid of bad habits

D. tell us to avoid Time Management mistakes

2.  We may know from the passage that Time Management is about ____________ . 

A. how to deal with a lunch break

B. how to get the quality of sleep 

C. how to do right things quicker and smarter

D. how to avoid doing the wrong things

3. What can we learn from the passage?  

A. Working with a plan of action can save one and a half hours per day.

B. Studies have shown that most people work with a messy desk.

C. People can't get a full night's sleep mainly because of too much stress.

D. The longer a lunch break is, the more efficiently people will work.

4. The author holds the following opinions EXCEPT ____________.

A. Time waits for no man.

B. Good order leads to great success.

C. A year's plan starts with spring.

D. No rest, no work.

在使用PowerPoint制作幻灯片时，选择一个已存在的图片对象， (62) 不能完成复制此对象的目的。

A．选择[编辑]菜单中[复制]命令，在目标位置执行[编辑]菜单中的[粘贴]命令

B．若选择鼠标右键快捷菜单中的[复制]命令，再在目标位置上选择[粘贴]命令

C．先按[Ctrl+X]组合键，在目标位置再按[Ctrl+V]组合键

D．按住[Ctrl]键的同时用鼠标拖动此图片至目标位置

冷却设备破损后，关闭水源主要是为了（）。

A.节约用水

B.防止向炉内漏水

C.易结渣皮

什么是数据导入？