一密封的圆台形容器,其横截面如图所示,内装一定质量的水,若把它倒置,则水对容器底

题型:选择题

问题:

一密封的圆台形容器,其横截面如图所示,内装一定质量的水,若把它倒置,则水对容器底面的作用情况是(  )

A.压强减小,压力增大;

B.压强减小,压力减小;

C.压强增大,压力增大;

D.压强增大,压力减小

考点:液体压强的计算压强的大小及其计算
题型:选择题

"Everything happens for the best," my mother said whenever things weren’t going my way. "Don’t worry. One day your luck will change."

Mother was right, as I discovered after I had finished my college education, I had decided to try for a job in radio. One day, I wanted to host a sports programme. I went to Chicago and knocked on the door of every station. But I got turned down every time.

In one station, a kind lady said my problem was that I hadn’t got enough experience. "Get some work with a small station and work your way up," she said.

I went back home. I couldn’t get a job there, either. Then my dad told me a businessman had opened a store and needed someone to help him. But again, I didn’t get the job.

I felt really down. "Your luck will change," Mom said to me. Dad lent me the car to help me to look for my job. I tried another radio station in Lowa. But the owner, a nice man, told me he had already had someone.

As I left his office, I asked, "How can someone be a sports announcer(播音员) if he can’t get a job in a radio station?"

I was waiting for the lift when I heard the man call. "What did you mean? Do you know anything about football?" He put me in front of a microphone and asked me to try to imagine that I was giving my opinion on a football game, I succeeded.

On my way home, Mom’s words come back to me, "One day your luck will change, Son. And when it happens, it’ll feel doubly good because of all the hard work you’ve had." At that moment I knew just what she meant.

16. What’s the writer’s ideal job?

A. A sportsman.                  B. A shop assistant.

C. A sports announcer.             D. A businessman.

17. Why didn’t the writer get the job in Chicago?

A. Because he was too young.

B. Because he didn’t get college education.

C. Because he’s got a good-looking person.

D. Because he hadn’t got enough experience.

18. The sentence "But I got turned down every time. "means"        ".

A. But I was refused every time

B. But I was successful every time

C. But I lost my way every time

D. But the door of every station was always closed

19. What made the writer succeed in the end?

A. His mother’s words.               B. A kind lady’s help.

C. His father’s car.                   D. His own hard work.

20. What’s the best title of this passage?

A. Mother’s Words.               B. Everything Happens for the Best.

C. No One Is Always Lucky.          D. To Find a Job in Radio Is Difficult.

题型:选择题

A wallet has been found and can be ______ the manager’s office.

A.claimed

B.announced

C.declared

D.cheered

题型:选择题

中国资本主义产生的因素不包括()。

A.清政府的支持

B.外商企业的刺激

C.洋务运动的诱导

D.封建经济的解体

题型:选择题

多址分配制度是卫星通信体制的一个重要组成部分,具体说来,主要有予分配方式和().

A.固定分配方式

B.按时分配方式

C.申请分配方式

D.按需分配方式

题型:选择题

公路工程设计变更分为重大设计变更、较大设计变更和一般设计变更。以下属于较大设计变更的是()。

A.隧道的数量或方案发生变化

B.连按线的标准和规模发生变化

C.收费方式及站点位置、规模发生变化

D.连续长度2公里以上的路线方案调整

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