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甲类功放效率低是因为_________。
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甲类功放效率低是因为_________。
A、只有一个功放管
B、静态电流过大
C、管压降过大
D、以上都不是
时间:2021-09-01 20:20
关键词:
联大
河南理工大学
模拟电子技术
答案解析
B
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