A.1.2A,0 B.0,-1.2A C.-0.2A,0 D.-0.2A,1.2A
A.0 B.1100 C.1645 D.4400
A.2.5 B.3 C.1.5 D.2
A.25/3W,3Ω B.25W,4Ω C.3W,3Ω D.25/3W,4Ω
A.UC=UL B.UC=-UL C.U为最大值 D.U≠UR
A.减小RC B.减小RB C.减小VCC D.换用β小的管子
A. B. C. D.
A.-102 B.0 C.-70.35 D.∞
A.单母线 B.单母线分段 C.双母线分段 D.桥形接线