图1所示一上端铰接,下端固定的轴心受压柱,承受的压力设计值为N=900kN,柱的长度

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问题:

图1所示一上端铰接,下端固定的轴心受压柱,承受的压力设计值为N=900kN,柱的长度为525m,计算长度系数=0.8。钢材为Q235(f=15N/mm2)。验算此柱的整体稳定,刚度和局部稳定。拄截面的尺寸如图所示,A=62cm2,ix=9.77cm,iy=6.48cm。容许长细比

考点:考研政治钢结构设计原理钢结构设计原理题库
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女婴,8个月,近2个月来睡眠不宁,烦躁多汗,时有惊跳,尚不能独坐。近2周来呼吸急促,但无发热、咳嗽。查体:前囟大,方颅,肋串珠及肋膈沟阳性,肺部未闻及啰音。

患儿出现气急的原因为()

A.贫血

B.合并肺炎

C.心功能不全

D.电解质紊乱

E.肺不张

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完形填空。
     I grew up poor, living with my wonderful mother. We had little money but plenty of love and attention.  
I was   1   and energetic. I understood that no matter how poor a person was, he could still   2   a dream.
My dream was to be a sportsman.   3   I was sixteen, I had started playing baseball. I could throw a
ninety-mile-per-hour fastball and hit anything that moved on the football field.  I was also   4  : my
high-school coach was Ollie Jarvis, who not only believed in me, but taught me  5  to believe in myself.  
He   6   me the difference between having a dream and realizing the dream. One particular   7   with Coach
Jarvis changed my life forever.
     It was the summer between my junior and senior years, and a friend recommended (推荐) me for a
summer job. This meant a chance for money in my pocket-money for a new bike and new clothes, and
the   8   of savings for a house for my mother. Then I realized I would have to   9 summer baseball to deal
with the work schedule, and that meant I would have to tell Coach Jarvis I wouldn't be playing.  
     When I told Coach Jarvis, he was as   10   as I expected him to be.  "You have your whole life to
work," he said.  "Your playing days are limited. You can't   11   to waste them." I stood before him with
my head hanging, trying to think of the   12   that would explain   13   him why my dream of buying my
mom a house and having money in my pocket was worth facing his   14   in me.
     "How much are you going to make at this job, son?" he asked. "Three twenty-five an hour," I replied.
"Well," he asked, "is $3.25 an hour the   15   of a dream?"
     That simple question made it   16   to me the difference between   17   something right now and
following a dream. I   18   myself to sports that summer, and within the year I was  19   by the Pittsburgh
Pirates to play baseball, and was   20   a $20,000 contract. In 2000, I bought my mother the house of my
dream!
( )1. A. happy    
( )2. A. lose      
( )3. A. By the time
( )4. A. right    
( )5. A. how       
( )6. A. gave      
( )7. A. accident  
( )8. A. aim      
( )9. A. keep up  
( )10. A. mad      
( )11. A. adopt    
( )12. A. answers  
( )13. A. for      
( )14. A. sadness  
( )15. A. source  
( )16. A. direct  
( )17. A. wanting  
( )18. A. provided
( )19. A. worked  
( )20 A. paid      
B. polite    
B. have      
B. The time  
B. popular  
B. why      
B. taught    
B. matter    
B. idea      
B. put up    
B. happy     
B. afford    
B. excuses  
B. to       
B. regret      
B. prize    
B. clear    
B. changing
B. devoted  
B. mentioned
B. got      
C. shy          
C. make        
C. At one time  
C. lucky        
C. when        
C. brought      
C. problem      
C. start        
C. give up        
C. frightened  
C. affect      
C. words        
C. on          
C. hopelessness
C. price        
C. clean        
C. dreaming      
C. headed      
C. fired        
C. offered      
D. honest        
D. need          
D. At a time      
D. confident      
D. whether        
D. asked          
D. experience    
D. purpose        
D. pick up        
D. shameful      
D. effect        
D. ways          
D. in         
D. disappointment
D. allowance      
D. straight      
D. choosing      
D. imagined      
D. hired          
D. signed        
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国际税收协定包括哪些内容?

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请根据经文准确的说出:约伯的为人是:完全正直,(),()。

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下列各项中,除.......之外,均与肛隐窝炎有关()

A.肛 * * 肥大

B.直肠息肉

C.肛周脓肿

D.肛瘘

E.肛 * * 炎

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