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【单选题】A new era is upon us. Call it what you will: the service economy, the information age, the knowledge society. It is all translated to a fundamental change in the way we work. Already we've partly been...
A.
the service industry is relying more and more on the female work force
B.
manufacturing industries are steadily increasing
C.
people find it harder to earn a living by working in factories
D.
most of the job opportunities can now be found in service industry
【单选题】CD4028 集成电路是 ______________ 集成电路。
A.
十六进制/十进制译码器集成电路
B.
BCD/ 十进制译码器集成电路
C.
BCD/八进制译码器集成电路
D.
以上都错误！
【多选题】集成电路与分立器件相比具有的特点（）。
A.
在同一硅片上采用相同工艺制造，适用于对称性高的电路
B.
电阻元件阻值范围受到局限，一般采用恒流源代替所需高值电阻
C.
难于制造较大容量电容和电感元件，常用直接耦合减少大电容和电感的使用。
D.
二级管常利用集电极和基极短接的三极管代替，这样与其他三极管的ube温度系数相近温度补偿性好。