由用户自行运行、维护、管理的供电设施故障引起其它用户停电时,属(),在统计停电用户数时,不计该故障用户。
参考答案:内部故障停电
根据句意及首字母提示完成句子。
1. I want to take my daughter to go to a m ______.
2. There are all k______of flowers in the store.
3. I can't f______my watch in the room.
4. You can ask (请求) s ______to help you.
5. My brother is 13 years old. He is still a s______.
影响离心分离效果的因素()
A.离心速度
B.离心温度
C.离心时间