________ use DC voltage to attract dust and contaminants to an electrically charged media or plate
A) HEPA filters B) Electronic air cleaners
C) Ultraviolet lights D) Pleated filters
B
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Genetic engineering is based on a technology involving recombinant DNA
Indicate whether the statement is true or false.
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The smallest atom is ____, which contains one proton and one electron.
a. hydrogen b. helium c. water d. carbon
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____ is the force applied to a material.
A. Stress B. Strain C. Failure D. Yield
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An ATC system has the ability to automatically ________
A) change the function door setting B) move the temperature-blend door C) adjust the blower speed D) All of these
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