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Gaokao Chemistry Practice Question

下列说法不正确的是

  1. A.液化石油气是纯净物
  2. B.工业酒精中往往含有甲醇
  3. C.福尔马林是甲醛的水溶液
  4. D.许多水果和花卉有芳香气味是因为含有酯

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