【判断题】【消耗次数：1】
多级放大电路总的通频带比其中每一级的通频带要窄。
①
正确
②
错误
参考答案：
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对测量放大器每一级电路电压，首先应人该级电源电路元器件着手，通常电压_________均说明电路有故障。
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过重或者过轻
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