下列叙述中正确的是 A.构成原电池正极和负极的材料必须是两种�属 b.由铜锌作电极与硫酸铜溶液组成的原电池中铜是负极 c.马口铁破损时 Template




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tomski下列叙述中正确的是 a.构成原电池正极和负极的材料必须是两种�属 b.由铜锌作电极与硫酸铜溶液组成的原电池中铜是负极 coloring