问题
多项选择题
关于盘、柜顶上小母线不同相或不同极的裸露载流部分之间，以及裸露载流部分与未经绝缘的金属体之间，其电气间隙和爬电距离的说法哪些是正确的（）
A.电气间隙不得小于12mm。
B.电气间隙不得小于20mm。
C.爬电距离不得小于12mm。
D.爬电距离不得小于20mm。
E.电气间隙和爬电距离均不得小于20mm。
答案
参考答案：A, D
搜题请搜索小程序“爱下问搜题”
关于盘、柜顶上小母线不同相或不同极的裸露载流部分之间，以及裸露载流部分与未经绝缘的金属体之间，其电气间隙和爬电距离的说法哪些是正确的（）
A.电气间隙不得小于12mm。
B.电气间隙不得小于20mm。
C.爬电距离不得小于12mm。
D.爬电距离不得小于20mm。
E.电气间隙和爬电距离均不得小于20mm。
参考答案：A, D
| 阅读理解。 |
Every year in English-speaking countries, people list the most popular names. Here are some examples. |
| 1. The following are all popular names in U.S. at this moment EXCEPT . |
[ ] |
| A. Emily B. Betty C. Emma D. Joshua |
| 2. The name "Mei" in China means ______. |
[ ] |
| A. joy B. beauty C. grace D. love |
| 3. Parents in China may pick a name for their child because ______. |
[ ] |
| A. The name can be shortened B. They want their child to be happy C. The name has a very good meaning D. They can call their child in a personal way |
| 4. Chinese and western names ______. |
[ ] |
| A. are totally (完全地) different B. are the same C. have some similarity (相同点) D. are not different |
| 5. The name "David" is popular in Britain partly because . |
[ ] |
| A. The name can bring good luck B. The name has a special meaning C. David Beckham is very famous D. The name can be shortened |