NPN三极管各极电压Ue=1V,Ub=1.2V,Uc=6V,该管处于()状态。
A.截止
B.饱和
C.放大
D.开关
参考答案:D
The pair of new shoes are very nice, could I __________?[ ]
A. try on
B. try out them
C. try on them
D. try them on
简述社会主义市场经济体制的基本特征。