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不能那樣說,你首先看反應物是什麼,生成物是什麼,如反應物是A和B,生成物是C和D,你就寫A+B-----C+D,如果B不參加反應,你就寫成A——>(B寫在箭頭上方)C+D 我是一個化學老師,剛講的這部分
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