题目内容：
Aspirin, when dried, contains not less than 99.5% of C9H8O4.
A.正确
B.错误
参考答案：
选择题：Aspirin, when dried, contains not less than 99.5% of C9H8O4.
- 题目分类：中国大学MOOC慕课
- 题目类型：选择题
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