The idea that polymers were long linear molecules consisting of many small units held together by chemical bonds was advanced by ____. ?
A. ?Herman Staudinger
B. ?Leo H. Baekeland
C. ?John W. Hyatt
D. ?Alexander Parkes
Answer: A
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____ is a cancer-causing, natural radioactive gas that permeates the ground.
A. Exhaust B. Carbon monoxide C. Radon D. Hydrogen
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What routine service procedure could result in lower fuel economy, which the owner may discover?
A) Replacing tires B) Using the wrong viscosity engine oil C) Replacing the air filter D) Either A or B
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The thryistor that does not have two anodes is the __________
A) silicon bilateral switch B) silicon controlled switch C) diac D) triac E) none of the above
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____ is the position of the type on the line.
A. Font B. Pagination C. Format D. Kern
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