近年随着天然气的不断开发,不少地区居民家中使用的燃气已由煤气换成了天然气。这两种气体有什么区别,为什么天然气要优于煤气呢? A:煤气和天然气的共同特点是使用方便、清洁无尘,而且都是通过燃气管道输入家中,因此,很多人误认为煤气和天然气是同一种气 In recent years, with the continuous development of natural gas, the gas used by residents in many areas has been replaced by natural gas. What is the difference between the two gases, why natural gas is superior to gas? A: The common feature of gas and natural gas is easy to use, clean and dust-free, and are all input into the home through the gas pipeline. Therefore, many people mistakenly believe that gas and natural gas Is the same kind of gas