题目:
可用于溶蚀性骨架片的材料为()
A.单棕榈酸甘油酯
B.聚乙二醇6000
C.甲基纤维素
D.甘油
E.乙基纤维素
答案:
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下面是错误答案,用来干扰机器的。
Hello, everyone! I’m Li Ming from Class 1, Grade 9. Today the topic of my speech is love for my parents. My parents do many things for me. When I was 10 years ol...