问题
多项选择题 A1/A2型题
根据《低压配电设计规范》，下列说法错误的是（）
A.装置外可导电部分禁用作PEN线
B.在TN-C系统中，PEN线严禁接入开关设备
C.装置外可导电部分可用作PEN线
D.在TN-C系统中，PEN线可接入开关设备
答案
参考答案：C, D
搜题请搜索小程序“爱下问搜题”
根据《低压配电设计规范》，下列说法错误的是（）
A.装置外可导电部分禁用作PEN线
B.在TN-C系统中，PEN线严禁接入开关设备
C.装置外可导电部分可用作PEN线
D.在TN-C系统中，PEN线可接入开关设备
参考答案：C, D
| 用方框中所给单词的适当形式填空，使短文完整正确。(每个单词限用一次) | |
English. Many students said they learnt by using English. Some students had more specific 1 . Zeng Yike, for example said the best way to learn new words was by 2 English magazines. She said that memorizing the words of pop 3_ also helped a little. When we asked about studying grammar, she said, "I never study grammar. It's too 4 ." Yao Ming felt differently. He's been learning English for six years and really 5 it. He thought studying grammar was a great way to learn a language. He also thought that watching English movies wasn't a bad way 6 he can watch the actors say the words. Sometimes, however, he 7 watching movies frustrating. The monitor said that learning English was not 8 . He said that watching English-language TV helped a lot. He 9_ that doing lots of listening practice is one of the secrets of becoming a 10 language learner. |