降压变压器高压侧的主分接头电压为220kV,若选择+2×2.5%的分接头,则该分接头 发布时间:2019-12-14 07:49 │ 来源:www.tikuol.com 题型:单项选择题 问题: 降压变压器高压侧的主分接头电压为220kV,若选择+2×2.5%的分接头,则该分接头电压为()。A.231kVB.230kVC.233kVD.229kV
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题型:单项选择题 Questions 14-23 ·Look at the ten statements for this part. ·You will hear a story about communication through time. ·Decide whetheryou think each statement is right(R) wrong(W) or not mentioned(NM). ·You will listen to it twice. ·Markyour answers on the Answer Sheet.In this listening selection, the word culture means "the way of life of a certain group of people."A. Right B. Wrong C. Not Mentioned 查看答案
题型:单项选择题 在实验室中,用锌、氧化铜、稀硫酸为原料制取铜,有下列两种途径:①②若用这两种方法得到铜的质量相等,回答下列问题:生成硫酸锌的质量大小关系①()②(填“等于”、“大于”、“小于”)。 查看答案