题目:当蓄电池充电时,( )进行储存。 When the battery is charged, () is stored.
A. 电能转化为化学能 Conversion of electrical energy into chemical energy
B. 化学能转化为电能 Conversion of chemical energy into electrical energy
C. 电能转化为机械能 Conversion of electrical energy into mechanical energy
D. 化学能转化为机械能 Conversion of chemical energy into mechanical energy
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