如图为初中化学中有关甲乙丙丁四种常见物质间的转化关系图下列说法正确的是 A.若甲为单质丙为单质则该反应不一定为置换反应b.若甲 Template




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tomski如图为初中化学中有关甲乙丙丁四种常见物质间的转化关系图下列说法正确的是 a.若甲为单质丙为单质则该反应不一定为置换反应b.若甲 coloring