自耦变压器的零序差动保护,是变压器发生接地故障时快速动作的保护。() 发布时间:2019-01-28 16:59 │ 来源:www.tikuol.com 题型:判断题 问题: 自耦变压器的零序差动保护,是变压器发生接地故障时快速动作的保护。()
题型:判断题 计算(1)9-(+83 )-6+(-73 ); (2)(13-34+16)×(-36);(3)-7×54+( -5 )×( -54 )-25; (4)( -3 )2÷34×( -12 )-[ 1+( - 2 ) 3 ]. 查看答案
题型:判断题 She wanted to make herself _____, but she failed. Others still didn't understand her. [ ]A. to understand B. understood C. understanding D. understands 查看答案