在因特网中，主机通常是指( )。A．路由器 B．交换机 C．集

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问题单项选择题

在因特网中，主机通常是指( )。

A．路由器

B．交换机

C．集线器

D．服务器与客户机

答案

参考答案：D

解析：主机通常是指服务器与客户机。

选择题

( ) 1. Last Friday, Miss Liu told us about some interesting dinosaurs.	A.
( ) 2. I learned how to use reference books in the library.	B.
( ) 3. We should turn off the lights when we leave the room.	C.
( ) 4. The dress is eight hundred dollars. It's expensive.	D.
( ) 5. People are trying to protect these tigers. They live in the northeast of China.	E.
( ) 6. Disneyland is one of the greatest theme parks in the world.	F.

单项选择题

木屋架在范围作用下，其（）往往随时间变化。

A.刚度

B.强度

C.挠度