In areas where there is no natural drainage, the footing drain is run ____.

A. to a dry well
B. by gravity
C. away from a municipal storm drain
D. toward the building


Answer: A

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Scrapers are used to haul dirt from a borrow pit to the cap of a landfill. The estimated cycle time for the scrapers is 9.5 minutes. The scrapers carry 10 cubic yards of soil per trip. Using a system efficiency of 45 minutes per hour and productivity factor of 1.0, determine the number of labor hours to haul 1 cubic yard of dirt. Each scraper requires one operator.

What will be an ideal response?

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Argillic horizons are characterized by ________

A) impervious hardpan layers B) organic matter accumulation C) accumulation of silicate clays D) high levels of iron and aluminum oxides E) high level of Na+ ions

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Overcharging a system reduces its efficiency by:

A) Increasing the system superheat. B) Starving the evaporator. C) Decreasing the system subcooling. D) Increasing the operating head pressure and compression ratio.

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Mechanical seals are classified by _____

a. size and configuration b. arrangement and design c. operating temperature and configuration d. industry and sector

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