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Author Question: The substance used to compare the specific gravity of gases is: A) Helium. B) Nitrogen. C) Air. ... (Read 61 times)

Jipu 123

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on: Jul 24, 2018
The substance used to compare the specific gravity of gases is:
 
  A) Helium. B) Nitrogen. C) Air. D) Oxygen.

Question 2

Before assembling a PD meter, technicians should make sure they study manual schematics and ________ closely.
 
  A) tracings B) blueprints C) line drawings D) P&I charts


bimper21

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

C

Answer to Question 2

C


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