The cultural relic buildings are both valuable cultural heritage left by ancestor and mark of the cultural development during that time. On the basis of the research and analysis of the present situation and existing problems about fire safety management of the historic buildings in China, corresponding prevention and control strategies were provided.

Abstract. As a common vacuum pump for the transportation of solids, liquids and gases, jet pump is widely utilized in the fields of water conversance, electric power, metallurgy, chemical engineering, environment protection and fire protection. The structure and working principle of jet pump is always the emphasis of the teaching of fire protection technology and equipment. Using teaching model of jet jump, the whole inner structure and the operation process of the machine can be demonstrated easily and repeatedly, which can make students understand the working principle and process of jet pump better.

Abstract-Toxic substances have hazardous characteristics of being flammable in contact with water, oxidative, flammable and explosive. Harm to human and other lives may result from the absence of safety management. After the main hazardous characteristics analysis of toxic substance, safety management was proposed correspondingly.

Abstracts-Jet pump is a mechanism of vaccum pump working with medium of liquid or gas for the transportation of fluids such as solid, liquid and gas in the fields of water conservancy, power, petroleum, metallurgy, transportation, chemical industry, environmental protection and fire protection. In this paper, the basic structure and working principle of jet pump were discussed firstly, and then the research status of jet pump was presented from points of design theory, fluid inner flowing and practical application of jet pump. Based on the deep analysis of the development trend of jet pump in future, this article has certain reference value for future research.

Abstract. In recent years, due to the increasing demand for dust, the risk of dust explosion is greatly increased. Dust explosion caused a large number of casualties and huge economic losses. This paper mainly introduces the conditions, main characteristics and influencing factors of dust explosion, and puts forward the corresponding effective preventive measures.