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Aspirin, when dried, contains not less than 99.5% of C9H8O4.
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Aspirin, when dried, contains not less than 99.5% of C9H8O4.
A.正确
B.错误
参考答案:
Aspirin, when dried, contains not less than 99.5% of C9H8O4.
A.正确
B.错误
参考答案: