单项选择题

常用集电极电流流通角θ的大小来划分功放的工作类别，丙类功放()A、θ=180°B、90°<θ<180°C、θ=

常用集电极电流流通角θ的大小来划分功放的工作类别，丙类功放()
A、θ=180°
B、90°<θ<180°
C、θ=90°
D、θ<90°

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