gas-fired heating
61Centrica — plc Type Public limited company Traded as LSE:  …
62Wok — Stir frying (爆 bào) with a wok A wok (in Cantonese; simplified Chinese: 镬; traditional Chinese: 鑊; Jyutping: wok6) is a versatile round bottomed cooking vessel originating in China. It is used especially in …
63Intermittent power source — [ Erie Shores Wind Farm monthly output over a two year period] An intermittent power source is a source of electric power generation that may be uncontrollably variable or more intermittent than conventional power sources, and therefore non… …
641973 oil crisis — Further information: 1973 world oil market chronology 1973 Oil Crisis Other names Arab Oil Embargo The 1973 oil crisis started in October 1973, when the members of Organization of Arab Petroleum Exporting Countries or the OAPEC (consisting of the …
65Energy development — Schematic of the global sources of energy in 2006 2007 …
66Energy use and conservation in the United Kingdom — For Government policy, see Energy policy of the United Kingdom Energy use and conservation in the United Kingdom has been receiving increased attention over recent years. Key factors behind this are the UK Government s commitment to reducing… …
67Coal power in the People's Republic of China — Entrance to a small coal mine in China. A coal shipme …
68fire — 1 noun 1 BURNING (U) the flames, light and heat produced when something burns: The warehouse was completely destroyed by fire. | be on fire (=be burning): The house is on fire! | catch fire/catch on fire (=start to burn): Mary knocked the candle… …
69Indoor air quality — (IAQ) is a term referring to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants. IAQ can be affected by microbial contaminants (mold, bacteria), gases (including… …
70Distributed generation — Distributed generation, also called on site generation, dispersed generation, embedded generation, decentralized generation, decentralized energy or distributed energy, generates electricity from many small energy sources. Local wind generator,… …
