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Aspirin, when dried, contains（）99.5% of C9H8O4.

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Aspirin, when dried, contains（）99.5% of C9H8O4.

A.more than

B.not more than

C.not less than

D.less than

参考答案:

答案：not less than

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Aspirin, when dried, contains not less than 99.5% of C9H8O4.

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