Which of the following is not an ecological role of wetlands?
A) controlling floods
B) acting as a filter for pollutants
C) source for residential water
D) providing habitats for many species
C
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45.782 + 19.229 - 3.502 =
A) 61.509 B) 62.509 C) 62.327 D) 68.513
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What is used to clean the surfaces of the heat exchanger?
A) Razor blade B) Soft cloth C) Wire brush D) Abrasive sponge
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What type of vent is used with 80% Category I furnaces?
A) Type B double wall gas vent B) PVC C) Single wall stainless steel D) 90% efficiency furnaces do not require a vent
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Good dimensioning practice requires the student to:
a. Learn correct technique b. Learn the rules of placement c. Learn the choice of dimension d. All of the above
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