What is a HEPA filter?

What will be an ideal response?


High Efficiency Particulate Air Filter. HEPA filters must be 99.99% efficient at removing 0.3 micron particles.

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The letter ____________________ in the AISI system, if used, indicate the manufacturing process basic open-hearth or electric furnace steel and basic oxygen furnace steel.

Fill in the blank(s) with the appropriate word(s).

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At i = 8% per year, the annual worth for years 1 through 6 of the cash flows shown is closest to:

(a) $302
(b) $421
(c) $572
(d) $824

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Hunters contribute a large amount to the U.S. economy from _____

a. excise taxes b. sale of hides and fur c. wildlife farms d. recreation

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Phalanges are found in the:

What will be an ideal response?

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