多层交换可以依据如下信息进行交换()
A.源MAC地址和目的MAC地址
B.源IP地址和目的IP地址
C.地址源端口和目的端口
D.IP包协议字段
参考答案:A, B, C, D
下列关于利息的说法不正确的是()。
A.利息是贷款利润的一种再分配
B.利息是投资者对其承担风险所要求的补偿
C.利息是资金的机会成本
D.利息是消费者放弃使用资金所得的补偿
— Where is the school singing contest going to be held tonight?
— I am not sure. Is it in the hall _________ the students often have a meeting? [ ]
A. where
B. which
C. that
D. when