问题 填空题

电子装置内部采用低噪声前置放大器,各级放大器间防止耦合和()。

答案

参考答案:自激振荡

填空题

指出下列加粗词语的词类活用情况。

1. 载以入__________________                         

2.之______________________                       

3.稍近益__________________                          

4. 山不在高,有仙则______________          

5.水不在深,有龙则_______________                

6. 无案牍之形_____________________                   

7. 惟吾德_________________________                         

8.无丝竹之耳_____________________                   

9. 不不枝_________________________                        

10.香益清________________________                    

11.会宾客大______________________                       

12.不能其一处也__________________               

13.京中有口技者__________________                  

14.妇扶儿________________________                     

15.妇拍儿声______________________                       

16.闻深巷中犬吠__________________                

17.稍出之________________________                         

18.之____________________________                         

19.其肉__________________________                           

单项选择题