Sally is happy. There is a big smile he 发布时间:2017-06-13 11:08 │ 来源:www.tikuol.com 题型:选择题 问题: Sally is happy. There is a big smile her face. [ ]A. on B. to C. in D. at
题型:选择题 计算题:某直流供电系统,负载电流750A,蓄电池两组,每组容量1000AH,开关电源选用48V/100A整流模块。求:①按目前负载情况,应该选用多少整流模块?②各整流模块限流设定值?(蓄电池充电电流取0.1C10) 查看答案