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.
In 1939, the USSR entered into the MolotovâRibbentrop Pact with Nazi Germany that contained a secret protocol that divided Romania, Poland, Lithuania, Estonia and Finland into German and Soviet spheres of influence.