O'Neal works hard．He is often seen _______ heavily before his teammates have even arrived at practice．

A．sweated

B．to be sweated

C．sweating

D．being sweated

下列（）不是交换机的配置方式。

A.通过Console口连接计算机终端，运行终端仿真软件

B.通过Ethernet上的TFTP服务器进行配置

C.通过Ethernet上的Telnet程序，远程Telnet方式连接配置

D.通过远程浏览器进行连接配置