初三物理“比热”一节的演示实验,是把两个同样的烧杯,分别装上质量和温度都相同的水和煤油,用两个同样的酒精灯分别给它们加热,观察两者升温的情况,从而得出两者“升高相同的温度,吸收的热量不相等”的结论(见教材62页)。对这个演示实验,一些细心的学生提出了一点疑问:用两个酒精灯分别给它们加热,是不能 The demonstration experiment in the third-year Physics “Special Heat” section is to put two identical beakers of water and kerosene with the same mass and temperature, respectively, to heat them with two identical alcohol lamps, and observe the two. The warming situation leads to the conclusion that both “elevate the same temperature and the amount of heat absorbed is not equal” (see the textbook page 62). For this demonstration experiment, some attentive students raised some questions: Using two alcohol lamps to heat them individually is not