1. This paper defines the concept of family violence, and analyzes its popularity, hazard, potency, hidden-ness, repetition, precipitation and preventability.
2. Objective:To assess existence and preventability of adverse drug events(ADEs) and to investigate excess length of stay and extra hospital charges of the ADEs.
3. This paper introduces theory, characteristic, maintainer and preventability maintenance of contact and non-contact thickness gauge and ray source of that are described.
4. Accidents have characteristics of contingency, inevitability and preventability. Fully realization of these characteristics is of great significance in raising the level of safety awareness.
5. Accidents have characteristics of contingency, inevitability and preventability. Fully realization of these characteristics is of great significance in raising the level of safety awareness.
