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单选题

If you shake the solution, do not use it for one hour.

AA. 如果摇晃了溶液,一小时不要使用。

BB. 如果摇晃了溶液,不要在一小时后使用。

CC. 如果摇晃了溶剂,不要在一小时内使用。

正确答案:A (备注:此答案有误)

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