问题
多项选择题
下列有关使用漏电保护器的说法，错误的是（）。
A.既可用来保护人身安全，还可用来对低压系统或设备的对地绝缘状况起到监督作用
B.漏电保护器安装点以后的线路不可对地绝缘
C在日常使用中不可在通电状态下按动实验按钮来检验其是否灵敏可靠
D.在TN配电系统，电器设备可以不用装设漏电保护器
答案
参考答案：B, C, D
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下列有关使用漏电保护器的说法，错误的是（）。
A.既可用来保护人身安全，还可用来对低压系统或设备的对地绝缘状况起到监督作用
B.漏电保护器安装点以后的线路不可对地绝缘
C在日常使用中不可在通电状态下按动实验按钮来检验其是否灵敏可靠
D.在TN配电系统，电器设备可以不用装设漏电保护器
参考答案：B, C, D
| 从方框内选择适当的单词并用其正确形式完成句子（每词只能选用一次）。 | |
2. He couldn’t forget his _________ time to feed pigs. 3. He has always dreamed about _______ a basketball player like Yao Ming. 4. —Oh, you are looking so tired. What happened? —I ran a long way without _______. 5. Be sure to watch your  bags _______. 6. Give me a call as soon as you _______ there. 7. Difficulties can make us feel _______ and be more hopeful about the future. 8. Sweat (汗) wet through his clothes  and _______ from his forehead. 9. There is something wrong with the old woman’s eyes, so she did everything very________. 10. Several _______ of eyes looked at the young man and his face  turned red. |
drop, careful 
