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Author Question: Technician A says that the sharp edges of spool valves should be rounded using 400 grit sandpaper. ... (Read 1109 times) |
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
Excessive alcohol use costs the country approximately $235 billion every year.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."