IEEE802.3有哪几种规范，分别是（）。 A.粗缆以太网 B.细缆以太网 C.双

根据括号里所给的汉语写出英语单词。

1. My sister _____ (有) a small mouth, but I have a wide one.

2. His _____ (脚) are big, but mine are small.

3. Whose pen is this? It's _____ (她的).

4. I have a _____ (黄色) coat.

5. What color is your _____ (衬衣)? It's white

（）是贯彻国家粮食收购政策，掌握入库粮食标准的关键性工作

Virtualization is an approach to IT that pools and shares (71) so that utilization is optimized and supplies automatically meet demand. Traditional IT environments are often silos, where both technology and human (72) are aligned around an application or business function. With a virtualized (73) , people, processes, and technology are focused on meeting service levels, (74) is allocated dynamically, resources are optimized, and the entire infrastructure is simplified and flexible. We offer a broad spectrum of virtualization (75) that allows customers to choose the most appropriate path and optimization focus for their IT infrastructure resources.

（71）（）

A.advantages

B.resources

C.benefits

D.precedents

镜面舌的形成机理是

A．水湿上泛
B．胃无生气
C．热盛伤津
D．热入营分
E．胃肠热结

无线电波传播的主要形式：（）

A、直射波

B、反射波

C、绕射波

D、散射波