____________________ is green, chopped forage that has been allowed to ferment in the absence of
air.
Fill in the blank(s) with the appropriate word(s).
ANS: Silage
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Why was lead once a serious atmospheric contaminant? How was that problem solved?
What will be an ideal response?
Ducts over 60 inches wide must be supported with _____
a. channels b. trapeze hangers c. strap hangers d. heavy gauge wires
Which activity does NOT allow a person to perform any work while at the shop?
A) Part-time employment B) Cooperative education C) Job shadowing D) Apprenticeship
How does increased ventilation sometimes help to improve indoor air quality?
A) The pollutants are purged using a pollutant purge timer, PPT. B) It improves the efficiency of the HEPA filters by increasing the velocity of air across the filters. C) It reduces the contaminant level through dilution. D) The contaminated indoor air is replaced with pollutant-free outside air.