2, people's air defense, that is, through manpower security precautions, such as personnel patrols, sentries and other preventive measures. Foreign countries more people involved in the implementation of wartime air defense and disaster relief in peacetime combined, called civil defense.
3, wartime personnel shelters are equipped with dry toilets, dry toilets are usually not separated from the masonry in place, the pro-war conversion and then masonry configuration in place, but the exhaust port is installed in place.