The development of steam heat allowed for better plant maintenance in greenhouses by providing

____.



a. a cleaner kind of heat
b. a misty, cloud-like interior
c. higher humidity levels
d. a better environment for fragile greenhouse glass


C

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One reason incident investigations are an important part of a safety program is that they _____.

a. exempt employers from liability b. document facts and preserve evidence c. prevent government audits d. detect insurance frauda. exempt employers from liability

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When insulating duct, which surface(s) should be covered first?

a. Sides b. Top c. Bottom d. End

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Vinyl heat-shrink tubing can be used to insulate a soldered wire splice and make it airtight.

Answer the following statement true (T) or false (F)

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Organic soils are some of the world's most ____________________ soils

Fill in the blank(s) with correct word

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