【判断题】【消耗次数：1】
三极管具有放大作用的外部电压条件是发射结正偏，集电结反偏。
①
正确
②
错误
参考答案：
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相关题目
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对三极管放大作用的实质，下面说法正确的是
①
三极管可以把小能量放大成大能量
②
三极管可以把小电流放大成大电流
③
三极管可以把小电压放大成大电压
④
三极管可用较小的电流控制较大的电流
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