试题与答案

下列不属于天然膜材的是() A.虫胶 B.明胶 C.琼脂 D.羟丙基纤维素 E.阿拉

题型:单项选择题 A1/A2型题

题目:

下列不属于天然膜材的是()

A.虫胶

B.明胶

C.琼脂

D.羟丙基纤维素

E.阿拉伯胶

答案:

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