【判断题】变压器的瓦斯保护范围在差动保护范围内,这两种保护均为瞬动保护,所以可以用差动保护来代替瓦斯保护。
【单选题】焊接过程中,产生弧坑的主要原因之一是( )。
【单选题】In his speech, he said that it was his primary school teachers that he was fond of _____ influenced his whole life.
【单选题】焊接过程中,产生弧坑的主要原因之一是( )。
【判断题】变压器的瓦斯保护范围在差动保护范围内,这两种保护均为瞬动保护,所以可用差动保护代替瓦斯保护。()
【判断题】变压器的瓦斯保护范围在差动保护范围之内,这两种保护均为瞬动保护,所以可用差动保护代替瓦斯保护。
【简答题】I think it was Einstein who said once that he used to have all kinds of dreams when he was young, the same ______ other people. The only differnce was that he was still clinging ______ those dreams wh...
【单选题】焊接过程中,产生弧坑的主要原因之一是( )。
【判断题】变压器的瓦斯保护范围在差动保护范围内,这两种保护均为瞬动保护,所以可用差动保护来代替瓦斯保护。