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Author Question: Check valves are _____ directional-control valves. a. one-way b. two-way c. three-way d. ... (Read 188 times) |
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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There are more nerve cells in one human brain than there are stars in the Milky Way.