- 搜标题
- 搜题干
- 搜选项
单项选择题
The voltage gain of a very well-designed common collector amplifier configuration, using a pnp transistor, is ____.
The voltage gain of a very well-designed common collector amplifier configuration, using a pnp transistor, is ____.
A．about -0.9
B．about 0.9
C．in the range 0.95 to 0.99
D．in the range -0.95 to -0.99
B．about 0.9
C．in the range 0.95 to 0.99
D．in the range -0.95 to -0.99
=5min，单位过滤面积通过滤液量
=0.112
/
,滤饼厚度
=2.0mm，当过滤累积时间
=10min，累积的
=0.162 
/
,则过滤总共时间
=25min时，滤饼厚度
=（）mm。 A. 
