采用数字式温度显示控制仪的单机多温系统,通过()来控制每个负载的温度。A、控制压缩机

题型:单项选择题

问题:

采用数字式温度显示控制仪的单机多温系统,通过()来控制每个负载的温度。

A、控制压缩机的开停

B、热力膨胀阀开度的控制

C、蒸发器制冷剂流通和截止的控制

D、冷凝压力的调节

考点:制冷工考试高级制冷工高级制冷工题库
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完形填空。
     Zhang Wen is from China. She is in  1  middle school in Hefei. Her favorite animal is  2 . He likes music
and he often listens to music on the Internet. Betty and David are her good  3  at school.
     Betty is from  4 . She likes  5  and she often watches the matches of the NBA. Betty's father is an English
teacher in China. He likes  6  and he reads  7  books and magazines.
     David is from England. He  8  football and his favorite  9  is Manchester United. David also likes films and
he often goes to the  10  at the weekend.
( )1. A. a      
( )2. A. the tree   
( )3. A. secretaries
( )4. A. American  
( )5. A. basketball 
( )6. A. elephants 
( )7. A. a lot     
( )8. A. asks    
( )9. A. star       
( )10. A. library  
B. an      
B. the trainers
B. workers     
B. Australian  
B. singing   
B. reading     
B. a lot of    
B. thinks    
B. singer     
B. stadium    
C. the    
C. the panda
C. friends 
C. Chinese 
C. swimming 
C. sports  
C. few     
C. likes   
C. school  
C. cinema   
D. his          
D. the grassland
D. sisters      
D. the USA      
D. dancing      
D. driving      
D. little       
D. goes         
D. team                      
D. playground   
题型:单项选择题
I was told that there were about 50 foreign students ____ Chinese in the school, most ____ were from Germany.

A. study; of whom
B. study; of them
C. studying; of them
D. studying; of whom
题型:单项选择题
下图是一正弦交变电流的电流图象.此正弦交变电流的频率和电流的有效值分别为(  )

A.5Hz,10A

B.50Hz,10A

C.50Hz,10 A

D.5Hz,10 A

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关于医患双方权利与义务的下述口号和做法中。不可取的是()

A.医者不是上帝

B.患者是上帝

C.把维护患者正当权利放在第一位

D.医者的正当权益也必须得到保证

E.患者的权利往往意味着医者的义务

题型:单项选择题

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