电力系统远动设备被控站的所有检修工作需在断电后进行，且断电至通电时间间隔至少为多少？
参考答案：断电至通电时间间隔至少为10s。
从下列各题选项中，选出画线单词的反义词。
1. Sarah has long hair.[ ]
A. quiet
B. short
C. big
2. Zhang Peng is short. [ ]
A. new
B. small
C. tall
3. John is very strong.[ ]
A. fat
B. tall
C. thin
4. Her nose is very small. [ ]
A. big
B. strong
C. quiet
5. He has two big black eyes.[ ]
A. blue
B. cute
C. white
多基因家族(multi gene family)
