1.为了探究电流产生的热量跟哪些因素有关小明同学先后采用如图所示的甲乙两个装置进行实验.她将两段电阻丝r1r2分别封闭在两个相同的烧瓶中 Template




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tomski1.为了探究电流产生的热量跟哪些因素有关小明同学先后采用如图所示的甲乙两个装置进行实验.她将两段电阻丝r1r2分别封闭在两个相同的烧瓶中 coloring