通信设备的直流供电系统由变换器、蓄电池组成。() 发布时间:2017-05-24 07:48 │ 来源:www.tikuol.com 题型:判断题 问题: 通信设备的直流供电系统由变换器、蓄电池组成。()
题型:判断题 给下列的情景选择正确的答句。( ) 1. Nice to meet you.( ) 2. How are you?( ) 3. Good morning.( ) 4. This is Sarah.A. Very well, thanks. B. Nice to meet you.C. Good morning, Miss White. D. Nice to meet you, too. 查看答案