According to covering scope, which three c

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问题单项选择题

According to covering scope, which three classes can computer network be divided ( )

A．PSN, LAN, WAN

B．MAN,LAN,WAN

C．PSN, FAST Ethernet, LAN

D．PSN, FAST Ethernet, MAN

答案

参考答案：B

选择题

–Which of these two books will you take?

–I’ll take _________. I need them to kill time on my journey.

A. either B. both C. all

单项选择题

《桃花扇》中以下哪一位是复社文人（）

A、侯方域

B、李香君

C、马士英

D、杨龙友