In conjunction with social reality, this paper discusses the causes and traits of external contingency, and suggests that an enterprise should establish a set of reaction mechanism so as to adjust its marketing strategy timely and correctly.

Study on incident detection and emergency response mechanism of large-scale residential parts;

Disposal of emergency of large-scale sport games in Beijing;

The training methods and experience of improving nurses ability of coping with accidents;

Analysis on the reasons of accidents and administration in the senile psychiatric department;

The application of MEBO in treating patients burned by accidents in groups;

Measures against Emergencies in Time of Large-scale Competitions in Beijing;

GIS applied research in the disposal of underground pipeline emergencies——An example of Suzhou underground pipeline system emergency treatment system;

Evacuation Countermeasure Study for Emergencies in Location of Dense Urban Mass;

It s necessary to establish the opening mechanism of information of emergent events in order to safeguard the public s right to know,strengthen people s supervision,enhance the efficiency of emergency and thus effectively prevent and deal with emergent events.

The big problem facing governments at different levels is how to strengthen the building of the legal system,the forewarning system of emergent events,the system of control and management,and to level up the government s ability to solve the public crisis.

In recent years,the emergent events have attracted lots of attention.

Design and implementation of the control systems for emergent events based on GIS;

Supply chain coordination in emergent events using a revenue-sharing contract;

Under the circumstance of increasing market competition, the enterprises ability of coping with emergent events has be-come the important factor of measuring their intelligence quality.