CT设备中,负责控制及数据处理的是()
A.X线管
B.探测器
C.扫描架
D.计算机系统
E.显示器和磁带、光盘刻录仪
参考答案:D
When I began to sing, they laughed and laughed, which made me .
A、exhausted B、embarrassing C、embarrassed
试述进程调度的时机。