压缩机每段缸的低压段和高压段有一平衡管线的作用是（）。A、气液相平衡线 B、减小压缩

下列每组词语中都有一个错别字，请用横线标出，并将正确字写在方格内。

A．委曲求全 不屑置辩 吹毛求疵 温文而雅

B．死心塌地 浮想连翩 目不暇接 首当其冲

C．莫名其妙 变本加厉 惹事生非 恻隐之心

D．冥思睱想 拖泥带水 顾名思义 相形见绌

三部脉举之无力，按之空虚，应指松软者，其脉象是（）

A.虚脉

B.缓脉

C.短脉

D.濡脉

E.弱脉

A

Hello,everyone. Because of the high rate of school violence(力)in some areas, teenagers’ safety becomes a serious problem. We are planning to set up an organization named School Watch to make sure that students have a safe school environment. Please be part of our plan!
What is School Watch
School Watch is a volunteer project in our school. It helps us stop violence and improve the quality of school life. It will keep yourself and your schoolmates safe. The other members of School Watch care for you and your classroom and you do the same for them.
Is it for everyone
Anybody can become a member of School Watch because everyone has something to offer.
What else can it do
School Watch makes it possible for us not only to help each other But also to make friends with each other. Some members may offer to help schoolmates who have problems with their homework.
Who is the Best School Watcher
Our school will look for the Best School Watcher and give him or her lots of prizes. You could be the one !
How do you start
To be part of this plan, the only thing you need to do is to talk to the director of the plan in your grade. If you want to get more information, check the official website at www.schoolwatch.com.

School Watch can help its members ______.

A．save the environment

B．organize sports activities

C．improve the quality of school life

D．do home work

帕金森病的主要临床表现？

简述YJl9卷烟机致命故障的显示内容。