问题
单项选择题
树脂PP指的是( )。
A.聚氯乙烯
B.高密度聚乙烯
C.聚丙烯
D.聚苯乙烯
答案
参考答案:C
解析: 聚丙烯为PP,聚氯乙烯为PVC,高密度聚乙烯为HDPE,聚苯乙烯为 PS。
树脂PP指的是( )。
A.聚氯乙烯
B.高密度聚乙烯
C.聚丙烯
D.聚苯乙烯
参考答案:C
解析: 聚丙烯为PP,聚氯乙烯为PVC,高密度聚乙烯为HDPE,聚苯乙烯为 PS。
阅读短文,完成表格,在每个城市对应的天气上画“√”。 | ||||||||||||||||||||||||||||||||||||||||||
Now is the weather. In Beijing it will be windy. In Guangzhou it will rain. Don't forget to take your umbrella with you. In Shanghai it will be sunny and warm. It's good to have a walk. In Sanya it will be hot You can go swimming. In Harbin it will snow. So put on more clothes.
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