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Author Question: Like many multisplit units, variable refrigerant flow (VRF) systems use ________ compressors and ... (Read 67 times)

roselinechinyere27m

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on: Jul 24, 2018
Like many multisplit units, variable refrigerant flow (VRF) systems use ________ compressors and electronic expansion valves to change the volume of refrigerant being circulated in the system.
 
  A) reciprocating B) scroll C) inverter driven D) screw

Question 2

The National Electric Code, NEC, is enforced:
 
  A) Anywhere the OSHA has jurisdiction because it is an OSHA regulation.
  B) All across the nation because it is a federal law.
  C) In the District of Columbia because it is a federal regulation.
  D) In states and municipalities that have adopted the NEC.


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juwms

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Reply #1 on: Jul 24, 2018
Answer to Question 1

C

Answer to Question 2

D


roselinechinyere27m

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Reply 2 on: Jul 24, 2018
Great answer, keep it coming :)

kthug

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Reply 3 on: Yesterday
Excellent

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