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A poll message is a control-acknowledgment message.. In a multidrop line arrangement (a central computer and different terminals in which the terminals share a single communication line to and from the computer), the system uses a master/slave polling arrangement whereby the central computer sends message (called polling message) to a specific terminal on the outgoing line.
MLWN – mean low water neaps; MLWS – mean low water springs; mm – millimetre (SI unit) MM – prefix designating a number in millions (thousand-thousand) MMbod – million barrels of oil per day; MMboe – million barrels of oil equivalent; MMboed – million barrels of oil equivalent per day; MMbpd – million barrels per day
Small coal at one time referred to charcoal, but this usage is obsolete. [31] Snap or bait. Snap, bait or piece is food taken to eat part way through the shift and often carried in a snap tin. [32] Sough. A sough is a drainage tunnel to take water from coal mines without the need to pump it to the surface. [1] An example is the Great Haigh ...
Also simply application or app. Computer software designed to perform a group of coordinated functions, tasks, or activities for the benefit of the user. Common examples of applications include word processors, spreadsheets, accounting applications, web browsers, media players, aeronautical flight simulators, console games, and photo editors. This contrasts with system software, which is ...
Raw coke. Coke is a grey, hard, and porous coal-based fuel with a high carbon content. It is made by heating coal or petroleum in the absence of air. Coke is an important industrial product, used mainly in iron ore smelting, but also as a fuel in stoves and forges.
Coal production per person was the highest in the world in 2022. Australia's coal policy is aligning with legislative targets to reach net zero emissions by 2050 and reduce emissions by 43% by 2030. There's no fixed schedule for phasing out coal electricity plants or coal mining activities. Coal-fired generators must give a three-and-a-half ...
Petroleum also makes up 40 percent of total energy consumption in the United States, but is responsible for only one percent of electricity generation. [53] Petroleum's worth as a portable, dense energy source powering the vast majority of vehicles and as the base of many industrial chemicals makes it one of the world's most important commodities.
Global coal use was 8.3 billion tonnes in 2022, [14] and is set to remain at record levels in 2023. [15] To meet the Paris Agreement target of keeping global warming below 2 °C (3.6 °F) coal use needs to halve from 2020 to 2030, [16] and "phasing down" coal was agreed upon in the Glasgow Climate Pact.