问题
单项选择题
因供电设施临时检修需要停止供电时，供电企业应当提前（）通知重要用户。
A.8h
B.12h
C.24h
D.7天
答案
参考答案：C
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因供电设施临时检修需要停止供电时，供电企业应当提前（）通知重要用户。
A.8h
B.12h
C.24h
D.7天
参考答案：C
| 用下列框中词的适当形式填空。 | |
2. Zhai Zhigang is the _______ Chinese astronaut to walk in space. 3. There are some snakes, _______ and birds in this zoo. 4. In North America, many students walk or _______ the school bus to school. 5. Jim is really a _______ boy. |