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A.һNoC
B.Wʽ x=2
C.ÿţкһ
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B | MnO2KCl | x | ܽ⡢^Vϴwl(f)VҺ |
C | O2(H2O) | z | ͨoˮ~^F(xin) |
D | HCl(H2SO4) | s | ^BaCl2Һ^V |
A. AB. BC. CD. D
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