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Author Question: Suppose the exchange rate in the year 2010 was 4 yuan per dollar and in 2011 the exchange rate fell ... (Read 102 times) |
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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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There are 60,000 miles of blood vessels in every adult human.