单选题:TT系统中,漏电保护器额定漏电动作电流为100mA,被保护电气装置的外露可导电部分与大地间的电阻不应大于下述哪一项数值? 题目分类:供配电专业知识 题目类型:单选题 查看权限:VIP 题目内容: TT系统中,漏电保护器额定漏电动作电流为100mA,被保护电气装置的外露可导电部分与大地间的电阻不应大于下述哪一项数值?( ) A.3800Ω B.2200Ω C.500Ω D.0.5Ω 参考答案: 答案解析:
South Korean star PSY’s"Gangnam Style" video, __________, ha South Korean star PSY’s"Gangnam Style" video, __________, has set the Guinness W 分类:供配电专业知识 题型:单选题 查看答案
The underlined word "compelling" in the fifth paragraph most The underlined word "compelling" in the fifth paragraph most probably meansA.int 分类:供配电专业知识 题型:单选题 查看答案
What can we learn about Amos Peters? What can we learn about Amos Peters?A.He is remembered for his love of animals. 分类:供配电专业知识 题型:单选题 查看答案
The beautiful mountain village __________ we spent our holid The beautiful mountain village __________ we spent our holiday last year is loca 分类:供配电专业知识 题型:单选题 查看答案