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某负反馈放大电路的闭环增益Af =20dB，ΔA/A =10%，ΔAf/Af =0.1%，则A和F应分别为,分析时不要近似。（ΔA/A 相当于dA/A，ΔAf/Af 相当于dAf/Af）,分贝:20lg

image组件不支持（）图片格式。 A: JPG B: PNG C: SVG D: BMP

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刑法属于实体法，刑事诉讼法属于程序法。（　）data:image/png;bas...OU26AAAAAElFTkSuQmCC

image组件支持的图片格式包括()。 A: BMP B: JPG C: PNG D: SVG