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The sidewall rubber of tire is .
The sidewall rubber of tire is .
A.SBR
B.IIR
C.Neoprene
D.NR
正确答案:NR
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An elastomer with great resistance to gas permeation can serve as inner tubes, gas hoses, tubing.
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Neoprene rubber is widely used to prepare diver's suit and soles, based on its special properties of .