The Social Security Administration (SSA) changed the way Social Security Numbers (SSNs) are assigned on June 25, 2011. This change is referred to as ârandomization.â The Social Security Administration (SSA) developed this new method to help protect the integrity of the SSN.
Cake recipes often say to line the baking pan with waxed paper or parchment, as if the two were interchangeable. As liners for cake pans they are, but in many other ways, they are not. Waxed paper is tissue paper thatâs been coated with paraffin on both sides, making it greaseproof and moistureproof.
Interchangeable parts are parts (components) that are, for practical purposes, identical. They are made to specifications that ensure that they are so nearly identical that they will fit into any assembly of the same type. One such part can freely replace another, without any custom fitting (such as filing).