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DivX属于下面（）
A.MPEG-3 B.MPEG-2 C.MPEG-4 D.MPEG-1
答案
下面的短文后有2 项测试任务：（1 ) 第 1 ? 4 题要求从所给的6 个选项中为第2 ? 5 段每段选择1 个最佳标题；（2 ) 第 5 ~ 8 题要求从所给的6 个选项中为每个句子确定1 个最佳选项。
DVD for Rent
1 A pay-for-play system for video DVD will emerge by summer as an alternative, and possibly a competitor, to the DVD format currently available.
2 The new system, called Digital Video Express (D ivx), operates like a DVD player, except for the specially coded discs. These will cost $5 for initial viewing over a 48-hour period and can be viewed again for additional fees and even purchased for unlimited viewing.
3 Divx combines the service of a video rental （出租的） store with the operation of a payper-view TV channel. Unlike a rented videotape, though, the Divx disc needn’t be returned. Customers can retain the disc for replay in the future at an additional fee, or simply throw it away.
4 Subsequent plays, or the purchase of unlimited-viewing rights, are billed to the customer’s Divx account and charged to a credit card. The player’s built-in memory keeps track of all Divx plays, and sends this information by toll-free phone modem （调制解调器） to the Divx
record-keeping centre. Each Divx disc and player has a unique identification code, so the system knows which discs have been played and where.
5 Some Divx discs could be converted for unlimited play at a price likely to be lower than buying a conventional DVD. Others, called Divx Gold, would be sold from the beginning for unlimited play without further charge. Although conventional DVDs will run in a Divx
player, conventional DVD players will lack the decoding and communications ability to play Divx discs. Divx players will be offered by Panasonic, RCA, and Zenith.
6 About 100 discs will be available initially from Disney, Dreamworks, Paramount, and Universal, growing to 500 titles within a year. Other film makers have yet to adopt the Divx system, which is owned by retailer Circuit City, the 350-store electronics chain that bankrolled （提供资金）its development.
Paragraph 3
A.Booming business of Circuit City B.Superior quality of conventional DVD discs C.The new system called Divx D.Unlimited play of Divx discs E.Disc-play tracking and billing systems F.Two functions combined
答案
DivX格式采用了MPEG4的压缩算法同时又综合了MPEG-4与（）各方面的技术
A.MPEG－1 B.MPEG－2 C.MP3 D.MP4
答案
DivX是一种新的媒体编码压缩技术，由两部分组成（）为MPEG-4格式、（）为MP3/WMA格式
A.Video；audio B.Video；sound C.audio；music D.Video；music
答案
下面属于陈独秀
答案
下面属于属于复杂故障的是（）
A.A-联络开关处故障 B.B-故障电流信号不连续故障 C.C-线路末端故障 D.D-断路器出口故障
答案
下面哪种情况属于沉淀反应的原理下面哪种情况属于沉淀反应的原理（）
A.对流免疫电泳 B.环状沉淀 C.单向琼脂扩散试验 D.双向琼脂扩散试验 E.以上均是
答案
下面哪些蛋白质属于硬蛋白下面哪些蛋白质属于硬蛋白（）
A.胶原蛋白 B.弹性蛋白 C.角蛋白 D.丝蛋白 E.以上全是
答案
下面（）属于紧急控制。
A.切除发电机 B.水轮发电机快速增 C.紧急投切并联电容器 D.HVDC功率紧急调制
答案
下面（）属于科研档案。
A.课题任务书 B.产品图样说明书 C.工艺规程 D.施工记录
答案
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