Factory overheads can be absorbed by which of the following methods? (i)Direct labour hours (ii)Machine hours (iii)As a percentage of prime cost (iv)$x per unit
【简答题】下图a所示电路中,已知BJT的β=100,VBE(on)=-0.7V,rbb′= 200Ω,其他电路参数如图中所示。 (1)可估算出电路的 I BQ ≈____, I CQ ≈____, V CEQ ≈____;( )A. 40μA,4mA,-4V; B. 4mA,40μA,-4V; C. 40μA,4mA,4V; D. 4mA,40μA,4V; (2)可估算出电路的电压增益 A v ≈____,...