Discuss the efficiency of LEDs compared to CFL or incandescent lights.
What will be an ideal response?
LEDs are currently much more expensive than CFL or incandescent lights, but they are close to equal in cost efficiency with both over their working life spans. This is because they are more energy efficient and longer-lasting by far than any other type of light bulb.
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Dirt is the number one cause of engine wear.
Answer the following statement true (T) or false (F)
Just before charging the system with clean refrigerant, you should:
A) Recover the refrigerant. B) Install filter driers. C) Evacuate the system. D) Flush the system.
A collapsible shaft is designed to:
What will be an ideal response?
What is the term for a U-shaped fitting that contains a water seal to prevent passage of air or gas through a pipe without materially affecting the flow of sewage or liquid waste?
A. spillover B. fixture trap C. negative pressure fitting D. fixture vent