London Underground rolling stock - Wikipedia

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Waterloo & City line - Wikipedia

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London Underground rolling stock includes the electric multiple units that run on the London Underground.The trains come in two sizes, smaller deep-tube trains and larger sub-surface trains that are of a similar size to those on British main lines. New trains are designed for the maximum number of standing passengers and for speed of access to the cars.

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As a coarse approximation, 1,000 cubic feet (28 m 3) of natural gas yields ≈ 1 000 000 Btu ≈ 1 GJ. For natural gas price conversion 1000 m 3 ≈ 36.9 million Btu and 1 000 000 Btu ≈ 27.1 m 3; As a unit of power. The SI unit of power for heating and cooling systems is watt.

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The line was built by the Waterloo & City Railway Company and was opened in 1898 (at the time, Bank station was named "City"). When it opened it was the second electric underground railway in London, following the City and South London Railway (now part of the Northern line).Its construction was supported by the London & South Western Railway, whose main line trains ran into Waterloo, and for

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