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  2. Swimming pool - Wikipedia

    en.wikipedia.org/wiki/Swimming_pool

    A swimming pool, swimming bath, wading pool, paddling pool, or simply pool, is a structure designed to hold water to enable swimming or other leisure activities. Pools can be built into the ground (in-ground pools) or built above ground (as a freestanding construction or as part of a building or other larger structure), and may be found as a ...

  3. Swimming pool sanitation - Wikipedia

    en.wikipedia.org/wiki/Swimming_pool_sanitation

    The sieve baskets are easily removed daily for cleaning as is the sand unit, which should be back-washed at least once a week. A perfectly maintained consecutive dilution system drastically reduces the build-up of chloramines and other DBP's. The water returned to the pool should have been cleared of all organic waste above 10 microns in size.

  4. Pumpjack - Wikipedia

    en.wikipedia.org/wiki/Pumpjack

    A diagram of a pumpjack. A pumpjack is the overground drive for a reciprocating piston pump in an oil well. [1]It is used to mechanically lift liquid out of the well if there is not enough bottom hole pressure for the liquid to flow all the way to the surface.

  5. La Niña Still Expected To Emerge; Although Weak, There ... - AOL

    www.aol.com/news/la-ni-still-expected-emerge...

    Cooler-than-average water temperatures in the equatorial Pacific Ocean are still expected to reach the criteria for a weak La Niña by the end of January, according to an updated outlook released ...

  6. What is an annuity? Here’s what you need to know before ...

    www.aol.com/finance/what-is-an-annuity-200110157...

    Annuities let you convert your savings into steady monthly payments that can last your lifetime, but come with high fees and complicated rules.

  7. Axial-flow pump - Wikipedia

    en.wikipedia.org/wiki/Axial-flow_pump

    An axial-flow pump for industrial use. An axial-flow pump, or AFP, is a common type of pump that essentially consists of a propeller (an axial impeller) in a pipe.The propeller can be driven directly by a sealed motor in the pipe or by electric motor or petrol/diesel engines mounted to the pipe from the outside or by a right-angle drive shaft that pierces the pipe.