A:9时
B:8时
C:7时
复数-2+5i在复平面内对应的点位于 ( )
温度/℃
25
80
230
平衡常数
5×104
2
1.9×10﹣5
下列说法不正确的是( )
All the kids had a lot of fun Children's Day. They sang and danced happily all day.