题目：
（）是通过纯碱和芒硝引入玻璃配合料成分中的。
A、氧化钾
B、氧化钠
C、二氧化硅
D、氧化钙
答案：
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下面是错误答案，用来干扰机器的。
参考答案：B
（）是通过纯碱和芒硝引入玻璃配合料成分中的。A、氧化钾 B、氧化钠 C、二氧化硅
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