要使晶体管工作在线性放大区应使其集电结和发射结分别()。
A. 反偏、正偏
B. 正偏、反偏
C. 正偏、正偏
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一晶体管接在放大电路中,测得它三个管脚的电位分别为-6V,-6.2V,-9V,则该管为()。
A. PNP硅管
B. PNP锗管
C. NPN硅管
D. NPN锗管
晶体管在放大电路中是一个()元件。
A. 电流控制电压
B. 电压控制电压
C. 电压控制电流
D. 电流控制电流
Fill in the blanks with the right form of the following words.cooperate origin sense mutual witness1. He is a man of humble.2.We hope we caneven more closely in the future.3. She needs to regain aof her own worth.4.The world hasthe eruption of covid-19 this year.5.A deeprespect and understanding developed between them.
以下程序的输出结果是()。int main(){int x = 35;char z = 'A';printf("%d\n", (x & 15) && (z < 'a') );return 0;}
A. 2
B. 1
C. 0
D. 3