What type of units are only required to have process stubs?
A) All systems are required to have process stubs. B) Type I only
C) Type II only D) Type II and Type III
B
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?What are additives that retard the decomposition of a polymer caused by heat, light energy, oxidation, or mechanical shear called?
A. ?heat stabilizers B. ?catalysts C. ?blowing agents D. ?char barriers
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What is the difference between a push belt and a pull chain?
A) A pull-chain is made up of links and link pins B) A push-belt is made up of about 400 wedge -shaped segments C) A pull chain looks similar to a silent chain D) All of the above
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Sealers are used to prevent wood from absorbing too much _____.
a. lacquer b. shellac c. stain d. air
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Give the name of one supplier for each of those materials
What will be an ideal response?
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