题目内容

Fe2+既可以是氧化态,也可以是还原态。

A. 对
B. 错

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高锰酸钾滴定法中酸化溶液时用的酸是HCl。

A. 对
B. 错

spill outpull awayin a new lightto sb's reliefbe born withmake up forat the timeon a missionin comparisonin ... termsThe findings show _______ general __________ that the same problem begins sooner in the country than in towns.

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_______.

spill outpull awayin a new lightto sb's reliefbe born withmake up forat the timeon a missionin comparisonin ... termsSomewhat _______ my______, the police has finally decided to eliminate my brother from their list of suspects.

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