（）有司机操作的电梯，在司机操作状态下，应点动关门。
参考答案：对
中心在原点，一个焦点坐标为（0，5），短轴长为4的椭圆方程为______．
At the railway station, the mother waved goodbye to her daughter until the train was _______. [ ]
A. out of sight
B. out of reach
C. out of order
D. out of place
