单选 which polymer has excellent oil resistance?
A、A SBR Styrene-butadiene rubber;
B、B NBR Nitrile butadiene rubber;
C、C PIP Polyisoprene;
D、D IIR Butyl rubber
发布时间：2025-03-14 14:32:08
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答案：B NBR Nitrile butadiene rubber
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