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问题 单项选择题

按偏航角及偏航角速度来操舵的自动舵特点为（）。

①能及早克服船舶偏航惯性；

②较快减少偏摆及稳定航向过程比较快；

③降低灵敏度；

④增加舵机频繁工作。

A.①②

B.②③

C.③④

D.①④

答案

参考答案：A

完形填空
完形填空。

     Most children like    1    TV. TV is very interesting. On TV    2    can learn a lot, and they can see and
know many things    3    their country and the world. Of course, they can    4    over the radio. But they
can learn better and more easily with   5   . Why? Because they can hear and watch at the same time. But
they can't   6    anything over the radio.
      Many children watch TV    7   Saturday or Sunday evenings. They are very busy with their lessons on 
  8   . But a few children watch TV every    9  . They go to bed very late. So they can't have a good   10   .
How about you, my young friend?

(     )1.A.watch
(     )2.A.we    
( )3.A. about   
( )4.A.sing  
( )5.A.radio 
(     )6.A.hear  
( )7.A.in   
( )8.A.weekend
( )9.A.place 
( )10.A.rest

B.to watch
B.you    
B. on    
B.learn           
B.film         
B.like   
B.on   
B.Sunday  
B.time 
B.time 

C.watches 
C.they   
C.at    
C.dance        
C.game   
C.see    
C.to    
C.Saturday 
C.man
C.game     

D.to watching 
D.I                     
D.with                  
D.hear                   
D.TV                    
D.learn                  
D.for                     
D.weekdays            
D.night 
D.meal            
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单项选择题 A1/A2型题

在“置研了白矾于瓶内”中，“了”之义为（）

A.语气助词

B.完毕

C.时态助词

D.过
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