市面上流行一种电热器 ,直接插入热水瓶图 1中 (如图 1所示 ) ,能较快地将一瓶冷水烧开 ,故得雅名“热得快”.因在保温瓶中直接对冷水加热 ,热量损失少 ,效率高 ,一瓶冷水几分钟就烧开了 ,给人们的生活带来了很多方便 ,故被广泛应用 .“热得快”,你热得好吗 ?这是学习初中物图 There is a popular electric heater on the market, which is directly inserted into the thermos bottle shown in Figure 1 (as shown in Figure 1). It can quickly boil a bottle of cold water, so it can be called “hot fast” because it is directly in the thermos bottle. Cold water heating, less heat loss, high efficiency, a bottle of cold water boiled for a few minutes, brought a lot of convenience to people’s lives, it is widely used. “Heat fast”, are you hotter? This is learning Junior high school map