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2008年质检部门在众多品牌乳制品中检出有毒有机物三聚氰胺[C 3 N 3 (NH 2 ) 3 ]，在乳制品行业掀起了一场轩然大波，引发了一场关于食品安全问题的大讨论。三聚氰胺是一种重要的有机化工原料，因其含氮量高而被不法商家用作食品添加剂，以提升食品检测中的蛋白质含量指标（N%），因此三聚氰胺也被人称为“蛋白精”。三聚氰胺遇强酸或强碱水溶液水解，胺基逐步被羟基取代，最后生成三聚氰酸 [C 3 N 3 (OH) 3 ]。三聚氰酸可用于消除汽车尾气中的NO 2 。其反应原理为：C 3 N 3 (OH) 3 3HNCO； 8HNCO＋6NO 2 7N 2 ＋8CO 2 ＋4H 2 O，下列说法正确的是 [ ]A.
C 3 N 3 (OH) 3 与HNCO为同一物质
B.
HNCO是一种很强的氧化剂
C.
1mol NO 2 在反应中转移的电子为4mol
D.
反应中NO 2 是还原剂
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