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问题 判断题

在距离保护中，如用距离选相元件可用第III段接地阻抗继电器作为选相元件，使装置总体上得到简化。

答案

参考答案：对

解析：

题目来源：220－500KV电网继电保护运行整定规程

专业类型：继电保护

设备类型：线路

难度等级：B

电压等级：220kV

知识点：保护原理

填空题

词汇运用

1. He often spends lots of time _____ with his friends online. (chat)

2. Good _____ with your trip to Hongkong. (luck)

3. In my family everyone has _____ own computer. (they)

4. I sometimes go to school without _____ breakfast. (have)

5. I can't hear you _____ , can you say it again?(well)

6. My brother and I are in different _____ (年级)

7. There're four _____ teachers in our class. (百)

8. The toilet is _____ the teachers' office and our classroom. (在......之间)

9. You can ask the _____ over there, maybe they know the way to the hospital.(警察)

10. It's hard for the little boy to _____  herself. (穿衣服)
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单项选择题

联苯胺引起的法定职业肿瘤为

A．肺间皮瘤
B．肺癌
C．白血病
D．皮肤癌
E．膀胱癌
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