左联的成就和贡献

A. 叶轮入口
B. 后侧盖板外凸圆环
C. A+B
D. A或B

A. 统一的
B. 唯一的
C. 单一的

A. The CBWFQ scheduler provides a guaranteed minimum amount of bandwidth to each class.
B. CBWFQ services each class queue using a strict priority scheduler.
C. The class-default queue only supports WF
D. Inside a class queue， processing is always FIFO， except for the class-default queue.

A. 正确
B. 错误