Boilers and furnaces which condense flue gas in second heat exchangers generally have annual efficiencies in what range?
A) 85% to 89.5%
B) 95% to 99.5%
C) 92% to 98.5%
D) 90% to 95.5%
C) 92% to 98.5%
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Early weaning usually means weaning the pigs before they are _____ weeks old
a. 2 c. 4 b. 3 d. 5
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The gas flame will lift off the burner and be noisy if it receives too much primary air.
Answer the following statement true (T) or false (F)
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Natural selection among species played an important role in the innate behavior of companion animals, especially regarding their ability to survive and reproduce in the wild
A. True B. False
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All the criteria below are used by the EPA to determine if a substance can be called "used oil," EXCEPT ___________
A) Color B) Origin C) Use D) Contaminants
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