站用变绕组绝缘电阻试验35kV要求吸收比(R60/R15)不小于1.3,当R60S大 发布时间:2018-04-24 14:56 │ 来源:www.tikuol.com 题型:单项选择题 问题: 站用变绕组绝缘电阻试验35kV要求吸收比(R60/R15)不小于1.3,当R60S大于()MΩ时,吸收比可不作考核要求。A.1000B.2000C.3000D.4000
题型:单项选择题 看图,选出与图片相符的句子。( ) 1. A. Our English teacher is from Canada. B. Our English teacher is from America. ( ) 2. A. The students are very strict.B. The students are very active. ( ) 3. A. He is tall.B. He is short.( ) 4. A. She is young and strict.B. She is old and kind.( ) 5. A. My brother is very funny.B. My sister is very quite. 查看答案
题型:单项选择题 船舶在港期间发生火灾,射水量较大,船舶有可能倾覆时,错误的做法是:A、在合理范围内应用消防水,不能盲目射水B、把积聚在舱内的水排至舷外C、利用调整压载水等手段增加船舶稳性D、依靠岸方消防队解决 查看答案