题目内容

氧化数有正负之分,既可以是整数,也可以是分数。

A. 对
B. 错

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Fe2+既可以是氧化态,也可以是还原态。

A. 对
B. 错

高锰酸钾滴定法中酸化溶液时用的酸是HCl。

A. 对
B. 错

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spill outpull awayin a new lightto sb's reliefbe born withmake up forat the timeon a missionin comparisonin ... termsWe dashed to the bus station and barely got on the bus when it_______.

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