某面积为200m2主计算机房内无线电干扰场强,在频率为0.15~1000MHz时不应

题型:单项选择题

问题:

某面积为200m2主计算机房内无线电干扰场强,在频率为0.15~1000MHz时不应大于()。

A.126dB

B.105dB

C.85dB

D.68dB

考点:电气工程师(发输变电)安全、环境保护与节能、消防安全、环境保护与节能、消防题库
题型:单项选择题
       Body language is very important in communication. Studies  1   that only 7% of the communication in
daily  2   is in words. Westerners expect people  3   at each other  4   the eyes when they talk. If you don't
do that while you   5   , it may show that you do not like the person,  6   that you are not interested in what
the person says. When   7   hands westerners will shake two or three times. Do not shake  8   westerner's
hand for a long time. When a man shakes hands   9   a woman, it is   10   for the woman to hold   11   her
hand first.
       In the west,  12   with one finger at a person while talking   13   means that the person   14   is speaking is criticizing the person who   15   pointed at. Besides this, men in English-speaking countries touch men
much   16   than men touch men in China. But men and women touch each other publicly  17   than men and women touch each other publicly in China. Boy friends and girl-friends often   18   hands, embrace ( 拥抱 ) or kiss in public.
       Good friends often   19   one another with a kiss   20   the cheek, if they are women or of opposite
sexes.
( )1. A. shows       
( )2. A. life         
( )3. A. look         
( )4. A. with         
( )5. A. see something
( )6. A. and         
( )7. A. shaking     
( )8. A. /           
( )9. A. to           
( )10. A. better     
( )11. A. up         
( )12. A. point       
(     )13. A. loudly     
(     )14. A. who         
( )15. A. is         
( )16. A. more       
( )17. A. often       
( )18. A. hold       
( )19. A. greets     
( )20. A. in         
B. show       
B. lives     
B. to look
B. by         
B. read a book
B. but       
B. shaken     
B. a         
B. towards   
B. important
B. on         
B. pointing   
B. fast       
B. whom       
B. are       
B. less       
B. much often
B. touch     
B. greet to   
B. on         
C. have       
C. lives     
C. looking   
C. in         
C. are looking
C. or         
C. shake     
C. the       
C. with       
C. worse     
C. back       
C. pointed   
C. usually   
C. which     
C. was       
C. longer     
C. more often
C. wave       
C. greet with
C. to       
D. has                
D. living            
D. looked            
D. to                
D. are talking        
D. except            
D. being shaken      
D. its                
D. by                
D. impolite          
D. out                
D. points            
D. again              
D. whose              
D. were              
D. harder            
D. too often          
D. show              
D. greet              
D. for                
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