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Author Question: What is the purpose of a high pressure switch in a packaged air handler? What will be an ideal ... (Read 42 times) |
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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.