题目内容
对于UPS电源中的逆变器，不是简单地将直流变成交流，尚需实现( )电压的自动调节。
查看答案
搜索结果不匹配？点我反馈
更多问题
They required that all the necessary documents ______ to the president's office before the end of this month.
Ever since the family moved to the suburbs last year, they ______ better health.
From the Passage, we learn that the total population of Africa is approximately （）
As a small boy, he was slow ______ learning to read and write.
微信支付 
支付宝支付