11ac Colourless flammable gas prouced by reaction of water with calcium carbide, Chiely used in welding and organic sythesis; also called ethyne. (9) (a?e??l??e) 25ac Dynamic influence that imparts motion to a body at rest or changes its rate motion. (5) (F?r?e) 23d POwer to which a base must be raised to equal a given number;used to simplify multiplication and division,especially before the advent of cheap electronic calculators. (9) (l?ga??t?m)24dIn computing,a class of low-level programming language that allows the programmer complete control over the machine code to be generated. (8) (?s?e??l?)