Explain how a septic system works
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Most rural and many suburban homes in the United States use septic systems to treat their wastewater. In a septic
system, the wastewater and suspended solids flow away from the house into a septic tank. In the septic tank, organic
matter is decomposed partially by organisms such as bacteria and fungi. The decomposed material either settles
to the bottom of the tank as sludge, close to the surface of the tank as oil or grease, or is liquefied and mixed with
the water. The liquid effluent flows from the tank to an absorption field. Once it reaches the absorption field, the
effluent flows into field lines, which are porous. The effluent passes out of the field lines into the surrounding soil
where it is attenuated further by microorganisms, dilution, and adsorption to soil particles
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Currently, the ____ project, a joint effort of experts from industry, academia, and government, is working to standardize UNIX.
A. POSIX B. BSD C. ANSI D. Ubuntu
Most passenger cars have a single driveshaft, but a vehicle with a longer wheel base will MOST-Likely have a:
A. two-piece drive shaft B. three-piece drive shaft C. four-piece drive shaft D. five-piece drive shaft
Figure 12.23 represents travel times on links connecting six zonal centroids. Determine the minimum path from zone to zone using all-or-nothing assignment based on the given trip table.
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Determine the difference in annual worth between an investment of $100,000 per year for 50 years and an investment of $100,000 per year forever at an interest rate of (a) 5% and (b) 10% per year. Compare the two differences.
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