back-wash valve
31History of Formula One — Formula One has its roots in the European Grand Prix motor racing ( q.v. for pre 1947 history) of the 1920s and 1930s. However, the foundation of Formula One began in 1946 with the Fédération Internationale de l Automobile s (FIA s)… …
32Calendar of 1997 — ▪ 1998 JANUARY JANUARY 1 Ghanaian Kofi Annan replaces Egyptian Boutros Boutros Ghali in the position of United Nations secretary general. Among those knighted by Queen Elizabeth II in the annual New Year s Day ceremony is pop musician …
33Glossary of nautical terms — This is a glossary of nautical terms; some remain current, many date from the 17th 19th century. See also Wiktionary s nautical terms, Category:Nautical terms, and Nautical metaphors in English. Contents: A B C D E F G H I J K L M N O P Q R …
34List of QI episodes (D series) — infobox tvseason season name = QI Series D caption = dvd release date = country = UK network = BBC first aired = 29 September 2006 last aired = 15 December 2006 num episodes = 13 prev series = Series C next series = Series E|This is a list of… …
35Grey's Anatomy (season 4) — infobox tvseason season name = Grey s Anatomy Season 4 caption = Promotional poster for the fourth season. dvd release date = September 9, 2008 dvd format = country = USA network = ABC first aired = September 27, 2007 last aired = May 22, 2008… …
36Recreational vehicle — This article is about the vehicle. For the film, see RV (film). RV redirects here. For other uses, see RV (disambiguation). A Class A motorhome with slide out extended floors …
37USS Iwo Jima (LPH-2) — was the lead ship of her class the first ship to be designed and built from the keel up as an amphibious assault ship. She carried helicopters and a detachment of embarked Marines for use in the Navy s vertical envelopment concept of amphibious… …
38Fuse (hydraulic) — In hydraulic systems, a fuse is a component which prevents the sudden loss of hydraulic fluid pressure. It is a safety feature, designed to allow systems to continue operating, or at least to not fail catastrophically, in the event of a system… …
39sluice — [slo͞os] n. [ME scluse < OFr escluse & LL exclusa < fem. pp. of L excludere, to shut out, EXCLUDE] 1. an artificial channel or passage for water, having a gate or valve at its head to regulate the flow, as in a canal or millstream 2. the… …
40Clavier-Übung III — Johann Sebastian Bach, 1746 The Clavier Übung III, sometimes referred to as the German Organ Mass, is a collection of compositions for organ by Johann Sebastian Bach, started in 1735–6 and published in 1739. It is considered to be Bach s most… …
