Which of the following is NOT the writer's purpose of knitting?
A.To make full use of her leisure time.
B.To save money.
C.To enrich her life.
D.To show her love for the family.
第1题
主要作为助流剂 ,可将颗粒表面的凹陷填满补平改善颗粒流动性的辅料是
A.滑石粉
B.硬脂酸镁
C.氢化植物油
D.聚乙二醇类
E.微粉硅胶
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