对如图所示的铜锌原电池说法正确的是 A.铜极是负极b.铜片上有气泡产生c.一段时间后溶液的ph减小d.一段时间后溶液的质量减轻 题目和 Template




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tomski对如图所示的铜锌原电池说法正确的是 a.铜极是负极b.铜片上有气泡产生c.一段时间后溶液的ph减小d.一段时间后溶液的质量减轻 题目和 coloring