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Author Question: Newer-style gun burners with special air-handling parts should be set in what range of CO2 ... (Read 31 times)

melina_rosy

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on: Jul 24, 2018
Newer-style gun burners with special air-handling parts should be set in what range of CO2 percentage?
 
  A) 79 percent B) 1113 percent C) 911 percent D) 03 percent

Question 2

A manufactured air duct that meets all 15 UL 181 tests is classified as:
 
  A) A flexible air duct.
  B) Flexible air plenum.
  C) Either a flexible air duct or a flexible air connector.
  D) A flexible air connector.


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abctaiwan

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

C

Answer to Question 2

A


melina_rosy

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Reply #2 on: Jul 24, 2018
Thank you!


abctaiwan

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Reply #3 on: Jul 24, 2018
Always glad to help...


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