Typically, coke-oven gas is obtained from a battery comprising a number of narrow, vertical chambers, or ovens (0.5m wide, 5m high and 12m long) built of silica brick that are separated by heating ducts, such that heat is transmitted to the coal through both sides of the chamber walls.
ISO keyboard symbol for âControlâ. In computing, a Control key is a modifier key which, when pressed in conjunction with another key, performs a special operation (for example, +); similar to the Shift key, the Control key rarely performs any function when pressed by itself.
Digital rights management (DRM) is a term referring to various access control technologies that are used to restrict the usage of proprietary software, hardware, or content.ne of the oldest and least complicated DRM protection methods for the computer games is a CD Key. CD Keys are a series of numbers and letters included with copies of the game, usually printed somewhere on the CD or the software package.