当环境温度升高时,三极管的下列参数变化的趋势是:电流放大系数β____,穿透电流I CEO ____,当I B 不变时,发射结正向压降|U BE |____。
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【简答题】B (2015· 合肥第二次质量检测 )Personal money - management website Mint . com suggests recently that responsible parents should give their kids credit cards — possibly starting as young as middle school. The web...