TD-SCDMA无线上网卡的上行速率理论值为 ()A.153.6Kbps B.38

题型:单项选择题

问题:

TD-SCDMA无线上网卡的上行速率理论值为 ()

A.153.6Kbps

B.384Kbps

C.3.1Mbps

考点:3G业务知识3G业务知识题库
题型:单项选择题

阅读理解。

     One of the most detailed (详细的) descriptions of a UFO was given by nine-year-old Gaynor

Sunderland in July 1976. Gaynor lived in Oakenholt, a village in North Wales. On her way home from

school, she saw a silver(银色的) object shaped like a saucer (茶碟) in a field not far from her home.

     The strange craft (飞行物) was about 30 feet long and 9 feet high. It had yellow windows along the

side and on the top there was a light flashing in a kind of box. Although Gaynor was very frightened, she

did not run away. Instead, she lay quietly in the long grass and watched the door of the strange craft

open. She saw two people wearing silver suits come out of the craft. They were carrying some kind of

equipment(设备) which they used to examine the ground. They were short and had large pink eyes,

Gaynor reported.

     After about half an hour, the two people went back into the craft. At once there was a loud noise

and the UFO took off. 

     Although Gaynor told her mother what she had seen, her family decided to keep quiet about it. They

did not want people to laugh at their daughter. However, 18 months later, Gaynor told her story to

UFO experts. They hypnotized(使人进入睡眠状态) Gaynor so that they could be sure she was telling

the truth.

     Not only did she repeat her story, but also she was able to draw a picture of what she had seen!

1. Which of these descriptions of Gaynor is true?

A. She's nine, lives in a village and has never seen a UFO before.

B. She was nine, and lived in Sunderland in England in 1976.

C. She was nineteen in July 1986, and lived in North Wales as a child.

D. She was at school north of Wales and her family name was Oakenholt.

2. Which of these descriptions of the UFO is true?

A. It was round and flat, and had yellow windows along the side.

B. It was ten feet longer than its breadth, and was silver.

C. It was a saucer-shaped box about thirty feet high.

D. It was a strange silver saucer which was like a craft.

3. What did Gaynor do as soon as she saw the UFO? 

A. She told her mother.

B. She ran away.

C. She went home from school.

D. She hid in the long grass and watched it.

4. Whom did she see come out of the UFO?     

A. Some equipment.

B. Two short, pink-eyed people.

C. Animals.

D. Silver people with equipment.

5. What did Gaynor say when she was hypnotized?     

A. She had been lying about the UFO.

B. She didn't understand the UFO.

C. She told the experts about the UFO.

D. She couldn't speak but she could draw a picture of the UFO.

题型:单项选择题

为了让乘客乘车更为舒适,某探究小组设计了一种新的交通工具,乘客的座椅能随着坡度的变化而自动调整,使座椅始终保持水平,如图所示。当此车减速上坡时,乘客 

[ ]

A.处于超重状态  

B.不受摩擦力的作用

C.受到向后(水平向左)的摩擦力作用

D.所受合力竖直向上 

题型:单项选择题

如图所示,在倾角为θ的足够长的斜面上,有一质量为m的物体,以初速度v0沿斜面向上运动,已知物体与斜面间的动摩擦因数为μ(μ<tanθ)。

(1)求物体上滑过程中的加速度大小;

(2)求物体上滑的最大距离;

(3)试应用牛顿第二定律和运动学公式证明:物体下滑过程中损失的机械能等于物体克服摩擦力所做的功。

题型:单项选择题

构建数据库系统由两个部分组成,一个是服务器(Server),另一个是(),这个系统结构叫做C/S结构。

A.终端

B.客户端

C.服务端

D.浏览器端

题型:单项选择题

不属于数据库加密方式的是()。

A、库外加密

B、库内加密

C、硬件/软件加密

D、专用加密中间件

更多题库