更多"Subways are underground systems of "的相关试题:
[单项选择]Subways are underground systems of high speed trains, which are mostly found in large cit ies: New York, London, and Tokyo.
A.地铁是地下的高速火车系统，主要出现在像纽约、伦敦和东京这样的大城市。
B.地铁是地下的火车系统，主要出现在像纽约、伦敦和东京这样的大城市。
C.地铁是地下的高速火车系统，主要出现在像纽约、伦敦和北京这样的大城市。
D.地铁是在地下的高速运行的火车，主要出现在像纽约、伦敦和东京这样的大城市。
[多项选择]High-speed rail (HSR) develops at a high speed in China. Many people, however, prefer slow trains to HSR because of the high ticket price of the latter. In many cases, even airfare is not much higher than HSR fares. As the construction of HSR is still gathering momentum in China, where do you think lies its competitiveness
[单项选择]
High-speed Internet connectivity still is an elusive luxury for most Indians: with just over a million broadband subscribers in a country of more than one billion people, only the best off in the big cities can take advantage of it. But WiMax, the IEEE standard for wide area wireless broadband connectivity, could be coming to the rescue. It offers India the prospect of largely skipping connections to the Internet by the DSL links and ca- ble modems that are standard in so many other places.
A number of recent developments suggest that WiMax might offer the best answer to last-mile broadband connectivity in a country like India--or at least that lots of corporate leaders are thinking the same way. For example, Videsh Sanchar Nigam Ltd. (VSNL), a leading international telecom service provider headquartered in Mumbai, already has deployed WiMax infrastructure in 65 Indian cities, relying on equipment made by Aperto Networks, in Milpitas, Calif. Aperto is a leading developer
A. Currently still not many Indians have access to high-speed Internet connectivity.
B. Wireless broadband connectivity might be an answer to India’s problem.
C. A majority of Internet users are finding wireless broadband very helpful.
D. An international telecom service provider has already deployed WiMax infrastructure in 55 Indian cities.
[简答题]High-speed ground transportation (HSGT) technologies with vehicle speeds exceeding 150 mph can be divided into two basic categories: High-speed rail (HSR) systems, with top speeds between 150 and 200 mph, use steel wheels on steel rails, as with traditional railroads, but can achieve higher speeds because of the design of both the rail bed and cars. High-speed magnetic levitation (MAGLEV) systems, with top speeds between 250 and 300 mph, use forces of attraction or repulsion from powerful magnets placed in either the vehicle or the guideway beneath it both to lift the vehicle above the guideway and to propel it forward. A MAGLEV vehicle can be likened to a flying train or a guided aircraft. If linked effectively with highways and air service, HSGT technologies-particularly MAGLEV—could have a significant impact on congestion in the future. When comparing HSR with MAGLEV technologies, MAGLEV appears to be the technology of choice. Though the new generation of HSR technology can reach co
[单项选择]The high-speed data services for the interconnection of computer networks are usually referred to as ______ connections．
A. LANs
B. MANs
C. WANs
D. ATM
[单项选择]High speed was one of the factors causing the deadly train disaster in Zibo, Shandong Province, Xinhua said on Tuesday.
The Monday train collision killed at least 71 and injured 416 others by the time of press. It occurred when a passenger train from Beijing derailed and collided with an oncoming train on the Jinan- Qingdao line. Xinhua reported that the train from Beijing was traveling at 131 kilometers an hour, in excess of the 80-kilometer-an-hour speed limit, before it came off the tracks.
Authorities had on Monday ruled out terrorism and said "human error" was to blame.
In 2006, China made up a quarter of the world’s total railway transport volume, while its track length only made up six percent of the world’s total, according to the Ministry of Railways.
On such busy tracks, a small error can cause chaos. The Zibo accident is the worst in China since 1997 when 126 people were killed in Hunan Province.
That year coincided with the decision to rai
A. 200 kph
B. 60 kph
C. 131 kph
D. 160 kph
[填空题]Jack likes driving at a high speed.
Jack likes driving ______.
[单项选择]Not only do these high tech systems make life more relaxing, but they also do so at no extra cost of time or energy. Every one of these features is designed to be the most convenient to any lifestyle. If a person’s favorite TV show is on the same night as the party of the year, then the mart house has already prepared to record it. The wired home can also save people from taking that extra trip to the grocery store by taking inventory of what is needed and making up a shopping list and ordering the food. A smart house can be controlled through a wall-mounted keyboard, a tele-command or even by voice. E-mail or voice mail can be checked from any TV or computer screen in the house because all screens are designed to be interchangeable and multipurpose.
A smart house cannot be controlled
A. through a computer keyboard.
B. through a tele-command.
C. by voice.C. through a big keyboard on the wall.
[单项选择]High-speed Internet provider At Home Corp. is buying Excite Inc., one of the leading destinations on the World Wide Web, for about $ 6.7 billion in stock in one of the largest Internet company deals. The deal announced today would surpass America Online Inc.’ s $ 4.2 billion acquisition of Netscape Communications Corp. last year. Based on closing stock prices Friday, Excite is worth about $ 3. 4 billion, which would mean that At Home would be paying a huge premium. The deal could eventually give telecommunications giant AT&T Corp. control of one of the highly sought-after portals that serve as entry points onto the Internet.
At Home is owned by Tele-Communications Inc., Cox Communications and several other investors. TCI is in the process of merging with AT&T Corp. in a $ 39 billion deal that is expected to be completed by spring. AT&T Corp. chief executive Michael Armstrong has stated he wants to use At Home as a conduit for delivering a wide range of communications services, i
A. was surprised at the At Home-Excite deal
B. was not satisfied with the At Home-Excite deal
C. accused At Home of accumulating its wealth from wars
D. considered the At Home-Excite deal desirable to At Home
