fuel dispensing
21Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
22technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
23List of Oregon ballot measures — Elections in Oregon Federal offices Presidential elections 2000 · 2004 · 2008 Presidential primaries …
24Ryan Model 147 — The Ryan Model 147 Lightning Bug was a drone, or unmanned aerial vehicle, developed from the earlier Ryan Firebee target drone series.DevelopmentRyan Model 136 Red Wagon and Lucy LeeIn 1959, Ryan Aeronautical performed a study to investigate how… …
25Precision bombing — is the desired skill of being able to bomb single buildings in a built up area, without causing any damage to the surrounding buildings, or the ability to place a bomb by air to within extremely accurate limits. Precision bombing was used by both …
26Pakistan — /pak euh stan , pah keuh stahn /, n. 1. Islamic Republic of, a republic in S Asia, between India and Afghanistan: formerly part of British India; known as West Pakistan from 1947 71 to distinguish it from East Pakistan (now Bangladesh).… …
27Missile Approach Warning — A Missile Approach Warning system is part of the avionics package on some military aircraft. A sensor detects attacking missiles. Its automatic warning cues the pilot to make a defensive maneuver and deploy the available countermeasures to… …
28architecture — /ahr ki tek cheuhr/, n. 1. the profession of designing buildings, open areas, communities, and other artificial constructions and environments, usually with some regard to aesthetic effect. Architecture often includes design or selection of… …
29Poppet valve — A poppet valve is a valve consisting of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end of a shaft also called a valve stem. The shaft guides the plug portion by sliding through a valve guide. In most… …
30Hydrogen economy — The hydrogen economy is a proposed system of delivering energy using hydrogen. The term hydrogen economy was coined by John Bockris during a talk he gave in 1970 at General Motors (GM) Technical Center.[1] Hydrogen advocates promote hydrogen as… …
