RBS2000机架中实现驻波比监测功能的单元是:()。A、DXU B、CDU C、T

题型:单项选择题

问题:

RBS2000机架中实现驻波比监测功能的单元是:()。

A、DXU

B、CDU

C、TRU

D、ECU

考点:无线维护机务员无线维护机务员题库
题型:单项选择题

用显微镜观察洋葱表皮细胞时,在视野中既有细胞又有气泡,用解剖针轻压盖玻片时,气泡出现的变化是(  )

A.会变形、会移动

B.不变形、不移动

C.会变形、不移动

D.不变形、会移动

题型:单项选择题

下列关于网络的说法正确的是[ ]

A.珍惜时间,远离网络            

B.网络交往与现实交往是一致的

C.上网都会成瘾,要学会克制      

D.做网络的主人,不做网络的俘虏

题型:单项选择题

在某赛季NBA比赛中,姚明最后六场的得分情况如下:17、15、21、28、12、15(单位:分),极差是______(分).

题型:单项选择题

以生活为陈述对象,仿照下列句子再写两个句子,组成排比句。

生活是一杯自酿的酒,是甜是苦自己都得把它喝下去;

生活是_________________,_____________________________;

生活是_________________,_____________________________。

题型:单项选择题
完形填空。
                                                           What do you hear?
     A Native American and his friend were in downtown New York City, walking near Times Square
in Manhattan. It was during the lunch hour and the __1__ were filled with people. Cars were honking,
taxis were __2__ around corners, sirens (汽笛)were howling, and the sounds of the city were almost
__3__. Suddenly, the Native  American said,"I hear a cricket."
     His friend said,"What? You must be __4__. You couldn't possibly hear a cricket in all of this __5__!"
     "No, I'm sure of it," the Native American said,"I heard  a __6__."
     "That's crazy," said the friend. The Native American listened __7__ for a moment, and then walked
across the street to a big cement plant where some bushes were __8__. He looked into the bushes,
beneath the branches, and sure enough, he __9__ a small cricket. His friend was utterly __10__.
     "That's incredible(不可思议)," said his friend."You must have superhuman ears."
     "No," said the Native American."My  __11__ are not different from yours. It all depends on what
you're listening for."
      "But that can't be," said the friend."I could never __12__ a cricket in this noise."
     "You, it's __13__,"came the reply."It depends on what is really __14__ to you.Here, let me show
you."He __15__ into his pocket, pulled out a few coins, and discreetly __16__ them on the sidewalk.
     And then, even with the noise of the __17__ street still blaring in their ears, they noticed every head
within twenty feet __18__ and look to see if the money that tinkled on the __19__ was theirs.
     "See what I __20__?" asked the Native American."It all depends on what's important to you."
( )1.  A.supermarkets  
( )2.  A.waiting  
( )3.  A.deafening  
( )4.  A.enthusiastic  
( )5.  A.environment  
( )6.  A.siren  
( )7.  A.carefully  
( )8.  A.waving    
( )9.  A.watched    
( )10.A.interested  
( )11.A.ears    
( )12.A.raise  
( )13.A.wrong    
( )14.A.impressive  
( )15.A.reached  
( )16.A.distributed  
( )17.A.deserted  
( )18.A.nod    
( )19.A.pavement  
( )20.A.perform  
B.streets      
B.parking      
B.frightening  
B.cautious    
B.noise        
B.horn        
B.patiently    
B.planting    
B.located      
B.glad        
B.hands        
B.feed        
B.true        
B.extraordinary
B.got          
B.hid          
B.crowded      
B.bend        
B.counter      
B.possess      
C.restaurants
C.screaming  
C.sickening  
C.uncertain  
C.scene  
C.cricket  
C.silently  
C.fading  
C.followed  
C.amazed  
C.eyes  
C.catch  
C.foolish  
C.important  
C.broke  
C.placed  
C.narrow  
C.turn  
C.floor  
C.indicate 
D.lanes    
D.lining  
D.weak    
D.crazy    
D.situation
D.call    
D.nervously
D.growing  
D.played  
D.lucky    
D.legs    
D.hear    
D.terrible
D.necessary
D.cut      
D.dropped  
D.empty    
D.lift    
D.square  
D.mean   
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