衡量联轴器偏差的两个数据是（）。
A、径向扭斜、轴线偏移
B、轴线偏移、侧向扭斜
C、径向偏移、轴线扭斜
D、轴线偏移、轴线扭斜
参考答案：D
The car ran into a crowd of middle school students, ______to hospital immediately.
A．two of whom sent
B．two of them sending
C．two of whom are sent
D．two of them sent
若抛物线y=ax2+bx+c（a≠0）过点（2，5），顶点是（1，3），求二次函数的解析式．
