水玻璃作为双氧水稳定剂的主要缺点是（）A、易结硅垢 B、价格高_爱下问搜题

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问题单项选择题

水玻璃作为双氧水稳定剂的主要缺点是（）

A、易结硅垢

B、价格高

C、白度不佳

答案

参考答案：A

阅读理解

看表格，完成下面的题目。

7: 30       get up
8: 00       go to school
9: 00       English class
12: 00     have lunch
2: 30       math class
5: 00       go home

1. It's 9: 00. It's time for ___________________.
2. It's ______________. It's time to get up.
3. It's 8: 00. _____________________________.
4. It's 12: 00. ____________________________.
5. _______________. It's time to go home.

问答题简答题

什么叫产量衰减规律？