The HIV virus, which causes AIDS, may lay dormant in an infected personas system for up to:
What will be an ideal response?
15 years
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Where a central tower crane is not in place on a site, using ______ to place concrete is usually the most economical alternative. ?
A. a hand-operated buggie B. a conveyor C. a powered buggie D. pumps
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The direction of a property line is usually expressed as a ____ angle.
A. P.O.B. B. right C. bearing D. grading
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Organisms which use carbon dioxide or carbonates for their carbon source and either sunlight or inorganic chemicals for their energy source are called ________
A) heterotrophs B) autotrophs C) actinomycetes D) facultative anaerobes E) detritivores
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A __________ potential forms on the inside surface of the glass of a pH electrode when the process solution is acidic.
A. negative B. positive
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