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With technology constantly evolving it comes as no surprise to see Amazon ( 亚马逊 ) launching a larger version of its e-reader ( 电子阅读器 ). The new version of the Kindle DX, with a screen as big as an A4 page, is aimed at reading newspapers, magazines and documents. The question is, are people ready to say goodbye to books and papers? “With other e-readers on the market and the Kindle brand becoming more well-known, it seems like a question of when will we see it, not if.” says Kevin, a university professor. Once you have bought your Kindle DX reader, you then gain access to the Kindle store. The virtual ( 虚拟的 ) store has more than 225,000 books available to buy as well as 37 newspapers and 28 magazines which you can subscribe to ( 订阅 ). And they say this is just the beginning. Amazon’s vision is to allow user access to every book that has ever been printed, in any language, and all in less than 60 seconds. Kindle is the first to use wireless technology which enables users to buy books from a virtual store in 60 seconds. However, will we actually benefit from the Kindle DX? Well apparently we will, or at least students will, especially if you are studying literature. Without printing and shipping costs, books could be cheaper and struggling with your books would be a thing of the past. The initial ( 起初的 ) price of the Kindle DX is quite expensive ($349), but if you worked out the overall costs of textbooks, it doesn’t seem too bad.
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举一反三
【单选题】关于内分泌系统最佳的描述是
A.
只是区别于外分泌腺的系统
B.
腺体分泌物直接进入血液的系统
C.
包括内分泌腺与分散在机体各处的内分泌细胞的一个总的系统
D.
由内分泌腺组成的系统
【单选题】Sutherland-Hodgeman多边形裁剪(逐边裁剪)算法中,对于多边形的某条边(方向为从端点S到端点P)与裁剪窗口的某条边的比较结果共有以下四种情况,分别需输出一些点,请问哪种情况下输出的点是错误的()
A.
S在裁剪边外侧而P在裁剪边内侧,则输出该边与裁剪边的交点I和P点
B.
S与P均在裁剪边内侧,则输出P点
C.
S在裁剪边内侧而P在裁剪边外侧,则输出该边与裁剪边的S点和交点I
D.
S与P均在裁剪边外侧,则不输出点
【多选题】学习导航的种类
A.
课程内容导航
B.
学习功能模块导航
C.
学习进度导航
【单选题】发热、头痛,体温达40°C,2天后大腿内侧出现片状红疹,中央较淡,边界清楚并隆起。应首先考虑为
A.
B.
丹毒
C.
D.
急性淋巴管炎
E.
急性蜂窝织炎
【多选题】软件通的学习导航有( )三种
A.
按课程
B.
按案例
C.
按职业
D.
按专家
【多选题】关于血压形成正确的叙述是
A.
循环系统平均充盈压约为7mmHg
B.
血量减少或血管容量增大,循环系统平均充盈压降低
C.
心肌收缩射血释放的机械能主要用于维持血压和推动血液流动。
D.
由于心脏射血是间断性的所以动脉血流也是间断性的
E.
与外周阻力无关
【单选题】肱骨干中下段骨折或手术最容易造成的并发症是
A.
肌皮神经损伤
B.
正中神经损伤
C.
桡神经损伤
D.
肱动静脉损伤
E.
腋神经损伤
【简答题】学习者浏览、观察学习信息的网络结构,找出自己所需的学习信息是那种导航的功能( ) a. 检索导航 b. 帮助导航 c. 线索导航 d. 浏览导航
【单选题】肱骨干中段骨折或手术最容易造成的并发症
A.
正中神经损伤
B.
肌皮神经损伤
C.
桡神经损伤
D.
肱动静脉损伤
【单选题】关于内分泌系统最佳的描述是
A.
只是区别于外分泌腺的系统
B.
腺体分泌物直接进入血液的系统
C.
包括内分泌腺与分散在机体各处的内分泌细胞的一个总的系统
D.
由内分泌腺组成的系统
E.
无导管,腺体分泌物直接进入血液的系统
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