精馏操作过程中,当精馏塔进料口的位置上移时()。A、有利于提高塔顶产品纯度 B、有利

题型:单项选择题

问题:

精馏操作过程中,当精馏塔进料口的位置上移时()。

A、有利于提高塔顶产品纯度

B、有利于提高塔底产品纯度

C、提高生产能力

D、不确定

考点:气体分馏装置操作工中级气体分馏装置操作工中级气体分馏装置操作工题库
题型:单项选择题

下列词语中没有错别字的一项是 [ ]

A.格局   侍候   温驯   无原无故      

B.隐匿   吆喝   残余   勃然大怒     

C.戏谑      驾驭   伶俐   往眼欲穿    

D.帐蓬   恐怖   痕迹   芒刺在背

题型:单项选择题

下列变异中,不能遗传给后代的是 [ ]

A.头发在自然状态下的颜色

B.血型:A型、B型、O型、AB型

C.欧洲人的蓝色眼睛

D.干旱环境中水稻结的种子较少

题型:单项选择题
完形填空。
                                                 A Love Note to My Mom
     When I was a little girl,I would often accompany you as you modeled for fashion photographers.
It was years later that I finally understood what role modeling  __1__  in your life. Little did I know
you were  __2__  every penny you earned to go to  __3__   school.
     I cannot thank you enough for  __4__  you told me one autumn afternoon when I was nine. After
finishing my homework, I wandered into the dining room where you were buried  __5__   piles of law
books. I was  __6__.Why were you doing what I do-memorizing textbooks and studying for  __7__?
When you said you were in law school, I was more puzzled. I didn't know Moms  __8__   be lawyers
too. You smiled and said,"In life, you can do anything you want to do."
     As young as I was,that statement kept  ___9__   in my ears. I watched as you faced the  ___10__  
of completing your studies, starting companies with Dad, while still being a   __11__   and a Mom of  five
kids. I was exhausted  just watching you   __12__.With your words of wisdom in my   __13__   mind,
I suddenly felt unlimited freedom to dream. My whole world   __14__.I set out to live my life filled with 
 ___15__,seeing endless possibilities for personal and professional achievements.
     Your words became my motto. I   __16__   found myself in the unique position of being either the
first (woman doctor in Maryland Rotary)  __17__one of the few women (chief medical reporters) in my
field. I gained strength every time I said, "Yes, I'll try that."
     Encouraged by your   __18__, I have forged ahead (毅然前行) with my life's journey, less afraid to
make mistakes, and   __19__  meeting each challenge. You did it, and now I'm   __20__   it. Sorry, got
to run. So much to do, so many dreams to live.
( )1.A. found      
( )2.A. saving      
( )3.A. business    
( )4.A. what        
( )5.A. at          
( )6.A. amused      
( )7.A. roles      
( )8.A. must        
( )9.A. ringing    
( )10.A. choices    
( )11.A. professor  
( )12.A. in danger  
( )13.A. weak      
( )14.A. came back  
( )15.A. hope      
( )16.A. constantly
( )17.A. and        
( )18.A. description
( )19.A. secretly  
( )20.A. doing      
B. played      
B. making      
B. fashion    
B. that        
B. to          
B. worried    
B. tests      
B. ought to    
B. blowing    
B. chances    
B. doctor      
B. in action  
B. powerful    
B. closed down
B. hardship    
B. shortly    
B. but        
B. statement  
B. curiously  
B. considering
C. kept      
C. donating  
C. law        
C. which      
C. upon      
C. puzzled    
C. positions  
C. need      
C. falling    
C. challenges
C. reporter  
C. in trouble
C. youthful  
C. went by    
C. harmony    
C. hardly    
C. or        
C. praise    
C. carelessly
C. correcting
D. provided      
D. receiving    
D. medical      
D. where        
D. under        
D. disappointed  
D. shows        
D. could        
D. beating      
D. changes      
D. model        
D. in charge    
D. empty        
D. opened up    
D. sadness      
D. nearly        
D. for          
D. introduction  
D. eagerly      
D. reading      
题型:单项选择题

下列哪项属于创伤性检查()

A.经皮细针抽吸活检

B.CT肺动脉造影

C.人工气道吸引

D.防污染样本毛刷

E.X线检查

题型:单项选择题

有下列二叉树,对此二叉树前序遍历的结果为( )。

A.XZCYAB

B.XYZABC

C.XYABCZ

D.XYAZBC

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