单项选择题Candy keeps no accounting records. The following information is available about her position and transactions for the year ended 31 December 20X4: $ Net assets at 1 January 20X4 430,000 Drawings during 20X4 59,000 Capital introduced during 20X4 120,000 Net assets at 31 December 20X4 680,000 Based on this information, what was Wanda's profit for 20X4?
单项选择题下列化学电源属于绿色电池的是( ) A、干电池 B、镍镉电池 C、锌锰电池 D、氢氧燃料电池