The difference between 80% efficiency furnaces and a 90% efficiency furnaces is that 90% efficiency furnaces
A) use more efficient air filters
B) use more combustion air per 1000 Btu firing rate
C) have an extra recuperative heat exchanger that condenses water out of the flue gas
D) burn more gas to increase the heat exchanger temperatures
C
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In environmental SWOT analysis the organizational position is analyzed according to its
a. opportunities and strengths. b. opportunities and weaknesses. c. strengths and threats. d. strengths and weaknesses. e. return on investment.
Compared with indentured servants, African-American slaves were
A. less reliable workers. B. more likely to rebel. C. cheaper to buy and own. D. a more easily controlled labor force. E. less expensive to buy but more expensive to keep.
A clearance fit of 0.0125 inches is needed between a shaft and a bushing to work properly. The inside diameter (ID) of the bushing measures 1.487 inches. What must be the measure of the outside diameter (OD) of the shaft in inches to obtain this clearance?
What will be an ideal response?
In dealing with safety in buildings, the building codes classify safety under three types. Name them.
What will be an ideal response?