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Author Question: Fiberboard duct is joined: A) With staples and UL 181A tape. B) With tape and mastic. C) With ... (Read 102 times)

gbarreiro

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on: Jul 24, 2018
Fiberboard duct is joined:
 
  A) With staples and UL 181A tape.
  B) With tape and mastic.
  C) With sheet metal screws and mastic.
  D) Using the mechanically self-sealing joints formed on the end of the duct.

Question 2

Barometric dampers are operated by:
 
  A) A pair of large magnetic solenoids. B) A damper motor, pulley, and belt.
  C) The air pressure difference across the damper. D) A small gear motor.


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atrochim

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

A

Answer to Question 2

C


gbarreiro

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Reply 2 on: Jul 24, 2018
Gracias!

kthug

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Reply 3 on: Yesterday
Wow, this really help

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