题目内容
（请给出正确答案）
[单选题]
The GSM system uses the（)multiple access mode.
A.FDMA
B.TDMA
C.CDMA
D.FDMA+TDMA
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题目内容
（请给出正确答案）
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.FDMA
B.TDMA
C.CDMA
D.FDMA+TDMA
如果结果不匹配，请 联系老师 获取答案
更多“The GSM system uses the()multi…”相关的问题
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The iPad
（1） The iPad is a tablet computer （平板电脑） designed and developed byApple. It is particularly marketed as a platform. for audio and visual media such as books， periodicals （期刊）， movies，music， and games， as well as web content. At about 1.5 pounds （680 grams）， its size and weight are between those of most contemporary smart phones and laptop computers. Apple released the iPad in April 2010， and sold 3 million of the devices in 80 days.
（2） The iPad runs the same operating system as iPod Touch and iPhone. It can run its own applications as well as ones developed for iPhone. Without modification， it will only run programs approved by Apple and distributed via its online store.
（3） Like iPhone and iPod Touch， the iPad is controlled by a multi-touch display——a break from most previous tablet computers， which uses a pressure-triggered stylus （触控笔） . The iPad uses a Wi-Fi data connection to browse （浏览） the Internet， load and stream media， and install software. Some models also have a 3G wireless data connection which can connect to GSM 3G data networks. The device is managed and synchronized （同步 ） by iTunes on a personal computer via USB cable.
（4） An iPad has different features and applications one can use to execute different and interesting things. There are lots of iPad applications that the owner can use to enhance the way they communicate. Some of these are how to use social networking sites and other online options.One of the most common uses is for e-mail services， iPad applications like Markdown Mail allow the adoption of specific and particular options. They enable the owner to personalize their e-mail accounts.
（5） While the iPad is mostly used by consumers， it also has been taken up by business users.Some companies are adopting iPads in their business offices by distributing or making available iPads to employees. Examples of uses in the workplace include lawyers responding to clients， medical professionals accessing health records during patient exams and managers approving employee requests. A survey by Frost & Sullivan shows that iPad usage in workplaces is linked to the goals of increased employee productivity， reduced paperwork， and increased revenue.
Paragraph 2 __________ 查看材料
A.Online stores
B.Differences from iPhone
C.Display and data connection
D.Business usage
E.Features and applications
F.Operating system
Walmart uses a micro-tailored appraisal system to analyzes individual and team performance levels.()
The passage uses "a bow and arrow" as an example to show______.
A．how an arrow gets so much energy to fly
B．why the trap-jaw ants have springy system
C．why the trap-jaw ants" jaws move so fast
D．how a bow and arrow works
According to paragraph 4, the Earth system as a whole is a closed system because
A．the Earth receives no energy from outside the system boundary
B．the boundary of the Earth system is clearly defined
C．no mass crosses the system boundary, but some energy does
D．the Earth system uses energy from solar radiation to support life
According to Prof．Mark Bellis，__________． 查看材料
A.e-cigarettes contain something addictive which has a longstanding effect on kids
B.e-cigarettes may be harmful to the lungs and immune system
C.the use of e-cigarettes penetrates into youth culture as rapidly as other drug uses
D.e-cigarettes make teenagers who have never smoked before start smoking
What advantage is mentioned about the F6600-D Copy and Print System？
A．It is very easy to use.
B．It is cheaper to operate than similar systems.
C．It uses less space than the current equipment setup does.
D．It creates more professional looking documents than the current equipment does.
The following short passage is mainly about
A．knowledge acquisition research.
B．knowledge-based system development.
C．the conceptual computational structures.
D．the cognitive processes.
The Federal German Post Office became the first to use the current postal code system to speed delivery. The function of a code system is to help in address scanning and the automated processing of mail, and to speed up mail sorting. Approximately 97 percent of all mail delivered in the United States uses the Zip Code. In 1974, the United States Postal Service issued a postage stamp to publicize the numerical system.
The Zip Code, the numerical system, was publicized in ______.
A．1943
B．1963
C．1974
D．not know.
A．the man uses less of electric utility than before he set up his p-v generator
B．the man gets extra power which he is generating himself
C．the man is satisfied with being energy self-sufficient
D．the man is happy to find out that the p-v system should pay for itself
