流量分类在QoS中的本质作用是()。
A.分类后便于传输
B.为了流量监管而分类
C.识别和区分出不同类型的报文,以便有区别地实施服务
D.为流量整形而分类
参考答案:C
Li Hua studies English very _______ and her English is _______ in her class. [ ]
A. careful, good
B. carefully, well
C. careful, best
D. carefully, the best
装卸搬运设备是进行装卸搬运活动的物质技术基础,是提高装卸搬运技术水平的重要保证。