在选煤厂一般采用水环式真空泵因该类型真空泵允许滤液在泵中短期运转不致发生故障。

乙烯制冷压缩机开车时系统操作正确的是（）。

A．系统正常前不投用冷户

B．系统正常前投用全部冷户

C．系统正常前投用一半冷户

D．先实气置换合格后再充压及引液

1905年成立的同盟会，被誉为“中国革命之母”，这主要是因为

A．首次明确提出反帝反封建的斗争目标

B．资产阶级民主革命有了统一领导中心

C．革命党人着手发动起义推翻清朝统治

D．孙中山共和革命思想为民众广泛接受

重症肺炎伴腹胀时，下列哪项处理不正确（）

A.禁食

B.腹腔穿刺减压

C.注射新斯的明

D.胃肠减压

E.纠正低血钾

One day my teacher said, “ Life is a game of chess, and the other player is time.” From that moment, I knew I had to enjoy my life. Do not waste time, because, you know, time will not come back. You cannot buy it. It is one of those things in life that you must really, really value.

When you see an opportunity, take it. You might not get it back. Never let an opportunity pass. And if it is too hard, remember that in the middle of every difficulty lies an opportunity.

Remember, you cannot choose how you' re going to die, or when. You can only decide how you' re going to live. Study as if you were going to live forever; live as if you were going to die tomorrow. Don' t just think of the present, but also think of your future. Your future is yet another chapter in your life and another way to live it.

Every single living thing has a purpose in life. "The purpose of life is a life of purpose," said Robert Byme.   

Learn to use time wisely, take opportunities, and enjoy life. We can discover the meaning of life in three different ways: (1) by doing a deed;  (2) by experiencing a value;  (3) by suffering life. So, what are you buying with yours?                               

小题1:The underlined part suggests that___________.

A．if life is a game of chess, time is also a game of chess

B．if life is a game of chess, both you and time are the players

C．if life is one player in a game of chess, time is the other player

D．if time is a game of chess, both life and you are the players小题2:According to the author, what can you decide?

A．How you die.

B．How you live.

C．When you die.

D．When you succeed.小题3:This article is most probably from__________.

A．an explanation of time in the universe

B．an essay about time and life

C．an argument that time is the most important thing in life

D．a description of an important class

一般发行新股只需聘请企业的法律顾问。（）