问题 单项选择题

射极输出器()

A.既能放大电压,也能放大电流

B.只能放大电压,不能放大电流

C.电压和电流都不能放大

D.只能放大电流,不能放大电压

答案

参考答案:D

材料分析题

《人民日报》载文指出,青少年谁都会有“成长中的烦恼”。调查显示,目前全国3亿多18岁以下的青少年中,约有3000万人有心理问题。

(1)如何看待青春期“成长中的烦恼”?

                                                                                                                                                                

                                                                                                                                                                

                                                                                                                                                              

(2)请你就解决青春期“成长中的烦恼”提出具体的办法。

                                                                                                                                                               

多项选择题