Exhaust-Only Ventilation Exhaust-only ventilation is the reverse of supply-only ventilation; stale air leaves the building from a known location (through exhaust fans ducted to the outdoors) and outdoor air enters the building from an unknown location.
In the 1960s, the Soviet Union began to prepare the Warsaw Pact for its internal function of keeping the NSWP member states within the alliance. The Soviet Union took a series of steps to transform the Warsaw Pact into its intra-alliance intervention force.
The Warsaw Pact no longer exists. It was an alliance of the Eastern Bloc countries, established in 1955 by the Soviet Union as a counterpart to NATO. It is not war saw, but Warsaw. In response to the birth of the NATO, the Communist countries of Europe signed a treaty of mutual defense and military aid in May 1955.ember of the Warsaw Pact were Soviet Union, Albania, Bulgaria,  Czechoslovakia, East Germany, Hungary, Poland, and Romania.