()负责参加配电设备状态评价与风险评估技术培训和交流活动。 A.配电部 B.变电部 发布时间:2018-04-19 07:20 │ 来源:www.tikuol.com 题型:单项选择题 问题: ()负责参加配电设备状态评价与风险评估技术培训和交流活动。A.配电部B.变电部C.输电部D.人力资源部
题型:单项选择题 根据句意及首字母提示补全单词。1. They're on v _____ in Shanghai right now. 2. He has a wide k _____ of painting and music. 3. How much does it cost to become a m _____ ?4. "Jim paints well" means he is a good p_____. 5. "Take a s _____ "means "take a bath". 查看答案
题型:单项选择题 已知A是3阶矩阵,α1,α2,α3是3维线性无关列向量,且Aα1=3α1+3α2-2α3,Aα2=-α2, Aα3=8α1+6α2-5α3. (Ⅰ)写出与A相似的矩阵B; (Ⅱ)求A的特征值和特征向量; (Ⅲ)求秩r(A+E). 查看答案