17.下列何者沒有兩性氧化物(amphoteric oxide)?
(A) BeO
(B)PbO
(C) SnO
(D)MgO
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統計: A(38), B(54), C(43), D(269), E(0) #1937415
統計: A(38), B(54), C(43), D(269), E(0) #1937415