哪种塑料有最大的市场份额Which of the following plastics has the highest

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哪种塑料有最大的市场份额Which of the following plastics has the highest market share
Which of the following plastics has the highest market share?
phenolics
polyethylene
polypropylene
polystyrene
polyvinylchloride

1：polyethylene ,聚乙烯,简称PE
2:polyproplene 聚丙烯,简称PP
3:polyvinylchloride聚氯乙烯,简称PVC
4:polystyrene聚苯乙烯,简称PS
用量大的基本就这些,前三种最大

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