[Answered] Per NFPA 90A , fiberglass duct may be used in systems that operate with a maximum temperature of ...

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Garrulous

Hero Member
Posts: 686

on: Jul 24, 2018

Per NFPA 90A , fiberglass duct may be used in systems that operate with a maximum temperature of _____.

a. 100F
b. 150F
c. 200F
d. 250F

Question 2

A carburizing/reducing flame has a white feather created by excess _____.

a. air
b. oxygen
c. acetylene
d. acetone

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Marked as best answer by a Subject Expert

stano32

Sr. Member
Posts: 339

Reply #1 on: Jul 24, 2018

Answer to Question 1

d

Answer to Question 2

c

Garrulous

Member
Posts: 686

Reply 2 on: Jul 24, 2018

Wow, this really help

shailee

Member
Posts: 392

Reply 3 on: Yesterday

Excellent

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