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Author Question: Optical fibers are made from hair-thin threads of A) marble. B) glass. C) asbestos. D) ... (Read 23 times)

bclement10

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on: Aug 27, 2018
Optical fibers are made from hair-thin threads of
 
  A) marble.
  B) glass.
  C) asbestos.
  D) ceramics.

Question 2

The two major components in cement are
 
  A) clay and limestone.
  B) sand and limestone.
  C) calcium carbonate and limestone.
  D) quartz and limestone.


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johnpizzaz

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Reply #1 on: Aug 27, 2018
Answer to Question 1

B

Answer to Question 2

A


bclement10

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Reply 2 on: Aug 27, 2018
Thanks for the timely response, appreciate it

jojobee318

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Reply 3 on: Yesterday
Wow, this really help

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