What components are added to make a two-stage furnace?
A) An extra set of burners and an extra gas valve
B) A two-stage gas valve, two draft proving switches, and a two-speed induced draft fan
C) Electric heat strips and a second stage sequence
D) A second heat exchanger and an electric vent gas damper
B
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Under optimal conditions, catfish embryos hatch after:
a. 12-24 hours c. 2-3 weeks b. 4-6 days d. 12-14 weeks
Technician A says that used oil should be collected for recycling. Technician B says that used oil filters may be disposed of as regular solid waste only after an approved draining process. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician
If the waterflow is reduced, the temperature difference across a condenser will ____.
A. increase B. decrease C. remain the same D. correspond to the evaporator saturation temperature
Given the following print, write the thread feature on each line next to the letters A through N or use a word processor to type the letters A through N with the correct thread feature after each letter.
What will be an ideal response?