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Gaokao Chemistry Practice Question

4. （6 分）分子式为 $\mathrm{C}_{4} \mathrm{H}_{8} \mathrm{Cl}_{2}$ 的有机物共有（不含立体异构）（）

  1. A.7 种
  2. B.8 种
  3. C.9 种
  4. D.10 种

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