曲线在t=t1的对应点处的曲率(t1≠π,n为整数)为()。 A.A B.B C.C

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问题:

曲线在t=t1的对应点处的曲率(t1π,n为整数)为()。

A.A

B.B

C.C

D.D

考点:一级注册结构工程师一级结构师基础知识一级注册结构工程师基础部分上午试卷
题型:单项选择题
There are different kinds of friends. Many friends will step in your life, but only      friends leave footprints .
I shall always recall (回忆) the autumn and the girl with the   . I know she will always be my best friend. It was a golden season. I liked walking alone in the leaves,   the sound of them.
Autumn is a harvest season but life is uninteresting. The free days always get me     . But one day, the sound of a violin flowed into my ears. A young girl, standing in the wind, was    in playing her violin.
I had never seen her before. The music was so nice that I listened quietly. Lost in the music, I didn't know that I had been  there for so long .But it did not seem to disturb her.
Leaves were still falling. Every day she played the violin in the corner of the building   I went downstairs to watch her performance. I was the only listener.
Autumn was nearly over. One day, when I was listening carefully, the sound suddenly   To my surprise, the girl came over to me.
“You must like violin.” she said.
“Yes. And you play very well. Why didn’t you continue?” I asked.
Suddenly, a  look appeared on her face and I could feel something unusual.
“I came here to see my grandmother, but now I must leave. I once played very badly. It was your listening every day that     me.” she said.
“In fact, it was your playing that gave me a meaningful autumn.” I answered, “Let's be friends.”
小题1:
A.goodB.trueC.newD.old
小题2:
A.soundB.songC.playD.violin
小题3: 
A.looking forB.listeningtoC.findingD.hearing
小题4: 
A.upB.offC.downD.over
小题5:
A.lostB.activeC.busyD.interested
小题6: 
A.waitingB.stoppingC.standingD.hearing
小题7: 
A.becauseB.soC.whenD.but
小题8:
A.stoppedB.beganC.goneD.changed
小题9: 
A.happyB.sadC.strangeD.surprised
小题10: 
A.surprisedB.excitedC.encouragedD.interested
题型:单项选择题

目前认为肺性脑病的根本发病机制是()

A.低氧血症

B.酸中毒

C.交感神经兴奋

D.二氧化碳潴留

E.血管扩张

题型:单项选择题

一个国家或地区旅游业赖以生存和发展的最基本条件是()。

A.旅游资源

B.旅行社

C.导游人员

D.游客

题型:单项选择题

人类宇宙观的演变过程。

题型:单项选择题

要继续将()就业放在就业工作首位,畅通其在不同地区、不同单位、不同行业之间的职业通道。

A.失业人群

B.高校毕业生

C.下岗工人

D.青少年人口

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