某蓄电池放电、充电时反应为：Fe+ Ni2O3 +3H2O 
Fe(OH)2 +2Ni(OH)2下列推断不正确的是（ ）
| A．放电时，Fe为正极，Ni2O3为负极 |
| B．充电时，阴极上的电极反应式是：Fe(OH)2 +2e－→Fe+2OH－ |
| C．放电时，负极上的电极反应式是：Ni2O3 +3H2O+2e－→2Ni(HO)2 +2OH－ |
| D．该蓄电池的电极必须是浸在某种碱性电解质溶液中 |
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