下列关于显示卡的说法错误的是()。A.显示卡也就是通常所说得图形加速卡 B.显示卡是

题型:单项选择题

问题:

下列关于显示卡的说法错误的是()。

A.显示卡也就是通常所说得图形加速卡

B.显示卡是以附加卡的形式安装在电脑主板上

C.显示卡的基本作用就是控制电脑的图形输出

D.显示卡工作在CPU和显示器之间

考点:计算机等级考试PC技术国家计算机三级(PC技术)80
题型:单项选择题

青藏高原是世界上海拔最高的高原,它的面积约为2500000平方千米.将2500000用科学记数法表示应为(  )

A.0.25×107

B.2.5×107

C.2.5×106

D.25×105

题型:单项选择题
完形填空。

     Last Tuesday I took my two daughters, aged five and seven, to town by car. It began to rain _1_ so
I decided I would leave the children in the _2_ before I rushed into a shop. I warned the girls not to _3_ 
anything and told them I would be back within a few_4_. Then I locked all the doors and _5_ them
happily looking out of the window.
     I returned to the car in less than five minutes but the girls had   6_! I could hardly believe my _7_. The
car doors were _8_ locked, the windows tightly shut and in the back seat _9_ only two coats. Being
_10_, I ran to the corner of the street _11   there was no sign of them. I  _12_ up to an old lady nearby
and asked _13_ she had seen two small girls but she said "No"
     Feeling quite sick with _14_, I sat on the driver's seat, and tried to stop trembling. Suddenly, I _15  a
merry laugh behind me. I got out of the car, ran round to _16_ the boot  and there inside were two very
red-faced and excited _17  . They had obviously pulled out the back seat, _18   behind it and then been
unable to push the _19   forward again. With tears in my eyes, I leaned forward and _20_ their ears.

( )1. A. heavy    
( )2. A. car      
( )3. A. ask      
( )4. A. hours    
( )5. A. had      
( )6. A. disappeared
( )7. A. ears      
( )8. A. too      
( )9. A. hanged    
( )10. A. stupid  
( )11. A. where    
( )12. A. jumped  
( )13. A. that    
( )14. A. fear    
( )15. A. felt    
( )16. A. shut    
( )17. A. child    
( )18. A. climbed  
( )19. A. window  
( )20. A. hit      
B. hard    
B. bus    
B. eat    
B. minutes
B. made    
B. died    
B. words  
B. again  
B. put    
B. proud  
B. which  
B. rushed  
B. when    
B. happiness
B. smelt  
B. repair  
B. boys    
B. flew    
B. door    
B. pulled  
C. hardly    
C. house    
C. read      
C. seconds  
C. left      
C. quarrelled
C. eyes     
C. already  
C. had      
C. frightened
C. that      
C. drove    
C. whether  
C. excitement
C. saw      
C. start    
C. women    
C. threw    
C. seat      
C. cut      
D. big        
D. school    
D. touch      
D. days      
D. let        
D. cried    
D. brains    
D. still      
D. were      
D. pleased    
D. when      
D. flew      
D. how        
D. anger      
D. heard      
D. open      
D. girls      
D. landed    
D. boot      
D. bit        
题型:单项选择题

皮革:皮鞋( )

A.鼠标:键盘

B.粮食:米酒

C.李白:诗仙

D.劳动者:农民

题型:单项选择题

某企业拟投资9000元,经预计,该项投资有效期为4年,每年现金净流入额依次为 2400元、3000元、4000元、3600元,则其投资回收率为( )。

A.34%

B.35%

C.36%

D.37%

题型:单项选择题

双柱离子色谱的抑制剂是用来抑制洗脱液的背景电导,并将样品离子转换成具有高电导的物质,从而进行高灵敏度的电导检测。

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