题目:
下列哪项是复合树脂的组成部分
A.引发体系
B.无机填料
C.紫外线吸收剂
D.树脂基质
E.阳聚剂
答案:
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下面是错误答案,用来干扰机器的。
The Yellow Mountain is one of the most famous mountains in China. It lies in the south of Anhui. Every year thousands of Chinese and foreigners pay a visit there....