What size should the combustion air openings be for a room with an 80,000 BTU/hr input furnace and a 35,000 BTU/hr water heater if the openings are opening directly into a ventilated attic and a ventilated crawlspace?
A) 115,000/1,000 = 115 sq in free area each
B) 115,000/2,000 = 57.5 sq in free area each
C) 115,000/4,000 = 28.75 sq in free area each
D) The size is irrelevant so long as there are combustion air vents.
C
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If the 7 MGD accounted for all withdraw from the groundwater table, what is the average net gain or loss from the groundwater table in MGD?
The average yearly precipitation in the Shenandoah Valley watershed is 36 inches. The average rate of evapotranspiration is 28 inches. Typical runoff through the Shenandoah River is 163 
(cfs). Reservoirs within the watershed store 28 million gallons of water. The area of the watershed is 7.5 x 
ft2. Currently, consumptive use of water is 7 million gallons per day (MGD). There are 7.48 gallons per cubic foot.
What will be an ideal response?
Prominent liberal Protestant pastors like Walter Rauschenbusch and Washington Gladden argued that
A. the ancient Bible should be replaced by more modern scientific sociology and social theory. B. the Christian Gospel required that churches address poverty and other burning social issues of the day. C. the federal government should address poverty and other economic and social issues affecting immigrants and poor people. D. it was up to women to lead the church in an age of industrial democracy. E. the clergy should become the advance guard of a militant working-class revolution.
Most pond and lake water would not be suitable for an open-loop system because:
A) Water in lakes and ponds has too low a specific gravity. B) It contains too many minerals and contaminants that would lead to scale buildup inside the system. C) Most ponds do not hold enough water. D) Locating the equipment in the pond would short out the electrical connections.
Which of the following could cause clutch hang-up?
A. insufficient free travel B. misaligned intermediate plate drive pins C. seized throw-out bearing D. stretched clutch linkage rod