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Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC). NPAs with 9 in the second position are reserved for future format expansion.
Actual cubic feet per minute (ACFM) is a unit of volumetric flow. It is commonly used by manufacturers of blowers and compressors. [1] This is the actual gas delivery with reference to inlet conditions, whereas cubic foot per minute (CFM) is an unqualified term and should only be used in general and never accepted as a specific definition without explanation.
Area codes in West Virginia (1 P) Area codes in Wisconsin (7 P) Area codes in Wyoming (1 P) This page was last edited on 24 December 2023, at 10:18 (UTC). Text is ...
Other countries maintain an autonomous numbering plan with distinct country codes within the international E.164 specifications by the International Telecommunication Union. Original North American area codes; List of North American Numbering Plan area codes; Telephone numbers in Mexico; Telephone numbers in Greenland
List of New Jersey area codes; List of New Mexico area codes; List of New York area codes; List of North Carolina area codes; List of North Dakota area codes; O.
To find out the 25 poorest and richest area codes, GOBankingRates used the 2015 Census Community Survey, the most recent data available, to rank cities across the nation in order of mean household ...
If an area code is not precisely one of these directions, like an area code that was northwest of this area code, then list it in both, e.g. list it in N= and W=. If the direction has no area code because it's on the Mexican border or a country not in the North American Numbering Plan or because it's an ocean, put the country and its code, or ...
The amount of ventilation in an ETS area is equal to the amount of an ETS-free area plus the amount V, where: V = DSD × VA × A/60E V = recommended extra flow rate in CFM (L/s) DSD = design smoking density (estimated number of cigarettes smoked per hour per unit area) VA = volume of ventilation air per cigarette for the room being designed (ft ...