截止区的特征是发射结电压小于开启电压且集电结反向偏置。（ ）
查看答案
对应于不同的基极电流,三极管的输出特性曲线是不同的
A. 对
B. 错
在实际应用中，若晶体管的发射结电压增大时，基极电流增大，但集电极电流基本不变,则说明晶体管进入饱和区。（ ）
A. 对
B. 错
Mathematical modelling and simulation forms the basis for the analysis and design of engineering systems as a result of ____________.
A. developments in computer technology and related software
B. developments in mathematics
C. engineering mathematics
D. the large number of students to study engineering courses
For an engineering student, ____________.
A. there is no need to study mathematics
B. he should spend more time on the study of mathematical skills
C. it is enough to learn to use the packaged computer software
D. the main objective is to learn to use mathematics with understanding to solve engineering problem
微信支付 
支付宝支付