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①NaHCO3? ②CO2? ③NH3? ④SO3? ⑤CaO ⑥NaOH ⑦BaSO4?⑧KNO3
⑨CH3COOH
A.①④⑤⑥⑧⑨ B.①⑤⑥⑦⑧ C.②③④ D.⑨
①NaHCO3 ②CO2 ③NH3 ④SO3 ⑤CaO?⑥NaOH?⑦BaSO4 ⑧KNO3 ⑨CH3COOH?
A.①④⑤⑥⑧⑨
B.①⑤⑥⑦⑧?
C.②③④
D.⑨?