传说中被称为“酿酒始祖”的是谁？
参考答案：传说中被称为“酿酒始祖”的是杜康。
_____ to improving services, we will provide customers with all the information they need.
A．Being committed
B．Having committed
C．Committed
D．Committing
有30个规模相同的接入交换机，每个接入交换机有24个10Mbps/100Mbps端口，则总的上连带宽至少应选择为（）
A.120Mbps
B.240Gbps
C.2.4Gbps
D.3.6Gbps
