阀型避雷器当有雷电过电压时,火花间隙就被击穿放电。雷电压作用在阀型电阻上,电阻值会变 发布时间:2018-11-21 09:06 │ 来源:www.tikuol.com 题型:判断题 问题: 阀型避雷器当有雷电过电压时,火花间隙就被击穿放电。雷电压作用在阀型电阻上,电阻值会变得很小,把雷电流汇入大地。
题型:判断题 Music should be taught routinely in schools because of the benefits _____ can have on the development of the brains of young children.A.whichB.thatC.oneD.it 查看答案