因煤气及可燃有害气体泄漏而造成人员中毒、房屋燃烧,甚至酿成厂矿、仓库、实验室、住宅区等因之而爆炸毀坏,造成国家人民生命财产遭受损失,这是令人十分痛心之事。可否避免这样的损失呢?可以。我们研究的煤气及可燃有害气体报警器MB-2型可以在空气中煤气含量达到可能造成危害时,内外声光报警器发生警报,同时排气扇自动接通电源,把 People are poisoned as a result of leaking gas and combustible harmful gases, burning houses, and even causing explosions and destruction in factories, mines, warehouses, laboratories and residential areas, resulting in the loss of lives and property of people in the country. This is very distressing thing. Can I avoid such a loss? We study the gas and combustible harmful gas alarm MB-2-type can be in the air when the gas content may cause harm, the sound and light alarm inside and outside the alarm, while the exhaust fan automatically connected to the power supply, the