单项选择题
假设一个磁盘有200个磁道,编号从0~199。当前磁头正在143道上服务,并且刚刚完成了125道的请求。如果寻道请求队列的顺序是86,147,91,177,94,150,102,175,130
A.565B.576C.162D.125
A.He didn't love building robots when he was a young boy.B.His father asked him to make a robot that could play balls.C.He is starting to sell this snow-shoveling robot in early 2017.
A.the remote controllerB.the ultrasound sensorC.the big and square yard