What type of vent is used with 90% Category IV furnaces?
A) 90% efficiency furnaces do not require a vent B) Type B double wall gas vent
C) PVC D) Single wall stainless steel
C
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What is the primary purpose of a lath house?
What will be an ideal response?
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_____ is a secretive bird that is rarely seen
a. American bittern b. Least bittern c. Green-backed heron d. Tricolored heron
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Most codes and standards for GTA pipe welding require ____ percent root penetration.
A. 90 B. 95 C. 98 D. 100
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If both a higher voltage and a higher current are desired, the cells or batteries can be connected in a ____ configuration.
A. series-resistant B. series-parallel C. series-opposing D. series-aiding
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