用模拟万用表欧姆挡测一晶体管,用红表笔接一个极,用黑表笔分别测量另两个极,测得的电阻都很小,则红表笔接的是()。

A、NPN的发射极

B、PNP的发射极

C、NPN的基极

D、PNP的基极

相关专题: 发射极   万用表   晶体管  

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