煤炭是开门七件事中的第一件,它与人民生活关系密切。由于上海市居民家庭烧煤大都习惯使用煤饼炉。使用的煤饼有大小两种规格。大煤饼每担80只左右,特点是火力持久,燃烧时间长,又可以封炉过夜;小煤饼每担120只左右,重量为大煤饼的2/3,特别是发火快,一般家庭一只可烧一顿饭菜。如果大小煤饼能按一定比例搭配使用,就能做到经济合理,节约家庭开支和能源。但是近几年来很受居民欢迎的小煤饼却经常买不到,结果只能以大煤饼代替小煤饼使用,既增加了 Coal is the first of seven things that open the door, and it is closely related to people’s lives. As Shanghai residents most of the family coal used to bake furnace. There are two sizes of briquette used. Large briquettes each about 80, is characterized by long-lasting fire, burning a long time, but also can be closed overnight; small briquettes each about 120, the weight of 2/3 of the large briquettes, especially the quick fire, the average family One can cook a meal. If the size of briquette can be used in accordance with a certain proportion, we can achieve economic and reasonable, save family expenses and energy. However, in recent years, very popular with residents of small coal cake but often can not buy, the result can only be used to replace the small coal briquettes, both increased