【单选题】A篇阅读 Let's face it . No one drinks diet sodas for the taste . People drink diet sodas in the hope that it will help them lose weight or at least keep them from gaining it . Yet it seems to have exactl...
【简答题】随着温度升高,晶体管的电流放大系数 β ____,晶体管的穿透电流 ICEO ____,晶体管在IB不变的情况下b-e结电压UBE ____。(增大,减小,不变)
【简答题】活动分区是____的主分区,一个硬盘只能有____活动分区
【简答题】基础上有插筋时,要将插筋( )以保证其位置的正确。