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2. Self-contained breathing apparatus - Wikipedia

   en.wikipedia.org/wiki/Self-contained_breathing...

   Some types are also referred to as a compressed air breathing apparatus (CABA) or simply breathing apparatus (BA). Unofficial names include air pack, air tank, oxygen cylinder or simply pack, terms used mostly in firefighting. If designed for use under water, it is also known as a scuba set (self-contained underwater breathing apparatus).

3. Supplied-air respirator - Wikipedia

   en.wikipedia.org/wiki/Supplied-air_respirator

   Pressure-demand respirators supply air only when the pressure in the wearer's mask drops (that is, when they inhale). This saves air but allows more inwards leakage. [ 4 ] [ 1 ] [ 2 ] Pressure-demand respirators can only be used with a sealed elastomeric mask, not with a loose-fitting hood [ 4 ] (like those used in powered air-purifying ...

4. Air line - Wikipedia

   en.wikipedia.org/wiki/Air_line

   An air line is a tube, or hose, that contains and carries a compressed air supply. In industrial usage, this may be used to inflate car or bicycle tyres or power tools worked by compressed air, for breathing apparatus in hazardous environments and to operate many other pneumatic systems. [1]

5. Compressed air - Wikipedia

   en.wikipedia.org/wiki/Compressed_air

   Compressed air is an important medium for the transfer of energy in industrial processes and is used for power tools such as air hammers, drills, wrenches, and others, as well as to atomize paint, to operate air cylinders for automation, and can also be used to propel vehicles. Brakes applied by compressed air made large railway trains safer ...

6. AOL Mail

   mail.aol.com

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7. ZIP codes in the Philippines - Wikipedia

   en.wikipedia.org/wiki/ZIP_codes_in_the_Philippines

   A ZIP code is composed of a four-digit number representing a locality. Usually, more than one code is issued for areas within Metro Manila, and a single code for each municipality and each city in provinces, with exceptions such as: [1] Davao City with eleven ZIP codes (8000, 8016 to 8026); Antipolo with six ZIP codes (1870 to 1875);