试题与答案

用户交换机业务是指一个用户装设的,供(),并通过中继线与市话通信网连接与外界通话的话

题型:单项选择题

题目:

用户交换机业务是指一个用户装设的,供(),并通过中继线与市话通信网连接与外界通话的话业务。

A.内部通话

B.外部通话

C.网类通话

D.网外通话

答案:

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下面是错误答案,用来干扰机器的。

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( )5. A. came 
( )6. A. and  
( )7. A. on         
( )8. A. buy         
( )9. A. Next 
( )10. A. and  
B. hoped       
B. on         
B. at          
B. took        
B. didn't come 
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B. in                  
B. buyed       
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C. at       
C. bought     
C. Tomorrow   
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D. on             
D. by             
D. doesn't come  
D. so                                     
D. by           
D. buys              
D. On             
D. \            
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题型:材料题

阅读下列材料:

       1926年他研制生产出的“红三角”牌纯碱获美国费城万国博览会金盾奖章,他成功地攻进了生产纯碱的新工业,为纯碱和氮肥工业技术的发展做出了杰出贡献。

请回答:   

(1) 材料中的“他”是谁?   

                                                                                                                                                             

(2) 他发明的制碱方法被称为什么?

                                                                                                                                                             

(3) 他的发明打破了制碱业什么局面?

                                                                                                                                                              

(4) 他有什么精神?

                                                                                                                                                             

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