从传输介质交换机可分为()。
A.二层交换机和三层交换机
B.广域网交换机和局域网交换机
C.以太网交换机、FDDI交换机
D.网络交换机和语音交换机
参考答案:C
________ treating the homeless man as a shame to society, Mrs. Wang provided him with food and water.
A.Instead of
B.As a result of
C.In the event of
D.Regardless of
简述计件工资制的优缺点。