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【简答题】
称取维生素C0.0500g溶于100mL的5mol/L硫酸溶液中，准确量取此溶液2.00mL稀释至100mL，取此溶液于1cm吸收，在λ max =245nm处测得A值为0.498。求样品中维生素C的质量分数。[ =560mL/(g·cm)]
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举一反三
【简答题】说有目的的话要（）
【单选题】Theodor Adornos attitude towards the idea of 'writing for humanity' is one of______.
A.
strong disapproval
B.
reserved consent
C.
slight contempt
D.
enthusiastic support
【简答题】肿瘤生长方式包括()、()和()三种。
【判断题】The emergence of cell biology as a distinct science was a gradual process to which many individuals contributed, but its official birth is generally said to have been signaled by two publications: one...
A.
正确
B.
错误
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