In this paper, the method of the construction protection on the chimney at danger is detailed introduced and the economic effect is presented through the foundation construction of the experimental building five meters away from the morth of the chimney in a plant.

Some key problems are pointed out,and suggestions are made on the study methods of service life and protective countermeasures for bolt and cable-supported structures.

The harmful career factors and protection measures against them among nurses working in emergency room;

On the basis of varions protection countermeasures, such as laser warning, hiding the true targets while showing the false one, as well as the air obstacle deployment, can make the enemy s reconnaissance and attack more difficult, and the protection ability of the large-scale bridge can b.