user-operator maintenance
11Criticism of APL — APL has been used since the mid 1960s on mainframe computers and has itself evolved in step with computers and the computing market. APL is not widely used, but minimalistic and high level by design, at several points in its history it could have …
12Water supply and sanitation in the Philippines — ervice qualityContinuity of supplyIn 2004, water supply was available on average for 18 hours each day in the West Zone of Metro Manila and 21 hours in the East Zone. According to their respective websites, the utility responsible for water… …
13Common Lisp — Paradigm(s) Multi paradigm: procedural, functional, object oriented, meta, reflective, generic Appeared in 1984, 1994 for ANSI Common Lisp Developer ANSI X3J13 committee Typing discipline …
14Fume hood — Infobox Laboratory equipment name = Fume hood caption = A common modern fume hood, acronym = other names = Hood Fume cupboard uses = Fume removal Blast shield inventor = manufacturer = model = related = Laminar flow cabinetA fume hood or fume… …
15Fire extinguisher — Extinguisher redirects here. Extinguisher may also refer to a candle snuffer. A stored pressure fire extinguisher …
16Wikipedia:Glossary — Welcome to Wikipedia, which anyone can edit. Help index: Ask questions · Learn wikicode · View FAQ · Read Glossary · Live Wikipedia editing related help via web chat  …
17Washing machine — This article is about the laundry cleaning apparatus. For the Sonic Youth album, see Washing Machine (album). A typical modern front loading washing machine Irreler Bauerntradition shows an early Miele was …
18Impact wrench — An impact wrench (also known as an air wrench, air gun, rattle gun, torque gun) is a socket wrench power tool designed to deliver high torque output with minimal exertion by the user, by storing energy in a rotating mass, then delivering it… …
19Elevator — For other uses, see Elevator (disambiguation). A set of lifts in the lower level of a London Underground station. The arrows indicate each elevator s position and direction of travel …
20postal system — System that allows persons to send letters, parcels, or packages to addressees in the same country or abroad. Postal systems are usually government run and paid for by a combination of user charges and government subsidies. There are early… …
