防止金属锈蚀是保护金属资源的有效途径，锌铬黄
侯英超 |
发布日期：2010-05-07 22:59:50
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防止金属锈蚀是保护金属资源的有效途径，锌铬黄 (化学式位ZnCrO4)常用于制防锈涂料。锌铬黄中铬元素的化合价为 A．+1 B．+2 C．+6 D．+7 |
