As the development of science and technology, a few big in city and even country obtained water gas, Jiao Lu from inside coal aerification gas etc, this is one great progress.

• 长期以来,我国居民生活燃料以煤为主,农村还烧大量柴草。随着科技的发展,一些大中城市乃至农村从煤炭气化中获得了水煤气、焦炉煤气等,这是一大进步。