皮皮学,免费搜题
登录
搜题
【简答题】
This new TV technology is called Qube (求比), a pay-cable system now operating in Columbus, Ohio in 20,000 homes for its first trial run. The new "two-way" cable system allows subscribers to "talk back" to those people miles away behind the TV cameras. Qube subscribers can select 30 different programs by pressing one of the buttons on a box like device, called the Qube console. (1) On the console, the channel selectors are connected by wire (cable) from the box, to the TV set, through the wall, into the street, then over utility poles (电线杆) or underground for miles and miles to the computers at the Qube's TV studio headquarters. Nine at the buttons connect to special TV programs that allow the audience to respond to questions by pressing the appropriate button on the Qube box, sending electronic signals to the Eclipse computers. A question is flashed on the screen with possible answers; or buttons 2 can serve as "yes" or "no" replies. The computers in the TV studio tabulate the responses from all viewers and flash the results on TV. (2) At last, the viewer can talk to his or her TV, and so far, Qube subscribers have held dialogues with politicians, decided on talent show winners, and even named a baby. They call it "touching in" since the words "touch now" flash at the bottom of the TV screen when a response is requested. Qube is revolutionizing American's relationship with television. As expected, the more popular of the 30 channels are those where the audience can "interact" and "touch in". the computers scan the response buttons every 6 seconds to provide the talk-back facility. (3) Quiz shows allow the audience to guess along with the players in the TV studios by responding to the multiple choice or true-false questions flashed on the TV screen. A weekly amateur talent contest. Talent Search, has viewers voting on whether each local act should be allowed to continue. When 50% or more hit the "no" button, the performer must stop. An interview show called Columbus Active makes frequent use of the two-way connection. (4) On a recent program 53% of Qube viewers touched in to say they would 'jump at the chance' to have dinner with ex-president Richard Nixon. Qube viewers are still waiting for the time when a politician will make a statement and then ask his audience: "How many of you believed what I just said?" Qube has the ability to provide a range of services that viewers can choose to subscribe to. (5) In the past, only a way a viewer could control what was broadcast on TV was to change the channel. Some see Qube as the beginning of a new era--Narrowcast. Narrowcast indicates the computers have ability to send a certain program only to some TV households (the rest get snow). With the cooperation of local colleges, Qube viewers, at extra cost can have various courses narrowcast into their living rooms.
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【单选题】某股票 RSI(5) 等于 95 ,一般可初步判断后市的操作为 ( )
A.
伺机买入
B.
伺机卖出
C.
不操作
D.
以上都不对
【简答题】某股票RSI(5)等于95,一般可初步判断后市的操作为( )。
【判断题】(2)Zigbee是IEEE802.15.4协议的代名词。
A.
正确
B.
错误
【单选题】在知-信-行模式中,态度转变是行为改变的前奏。在获取了信息之后,能否进一步促成态度的转变,受到以下一些因素的影响,包括:(1)信源的权威性(2)媒介的传播效能(3)健康诉求的紧迫性(4)行为效果的显著性
A.
(1)(2)(3)
B.
(2)(3)(4)
C.
(1)(3)(4)
D.
(1)(2)(3)(4)
【简答题】某股票RSI(5)等于95,一般可初步判断后市的操作为( )。
【单选题】1单选(2分) wifi技术的技术标准是?
A.
IEEE802.15.4
B.
IEEE802.15.2
C.
IEEE802.11
D.
IEEE802.15.3
【单选题】某股票RSI(5)等于95,一般可初步判断后市的操作为( )。
A.
伺机买入
B.
伺机卖出
C.
不操作
D.
先买入后卖出
【单选题】患者,男,50岁。慢性肾炎病史6年。现浮肿明显,下肢尤甚,面色咣白,畏寒肢冷,腰膝酸软。神疲纳呆,阳萎,舌嫩淡胖有齿痕,脉沉细。检查:尿成规示:蛋白(+++),镜检可见颗粒管型。治宜
A.
附子理中汤合真武汤
B.
理中丸
C.
归芍地黄汤
D.
参芪地黄汤
E.
玉屏风散合六味地黄丸
【多选题】下列有关KAP模式的叙述正确的是
A.
卫生保健知识和讯息是改变健康行为的基础
B.
此模式的实质是认知理论在健康教育中的应用
C.
信念和态度是行为改变的动力
D.
知、信、行三者之间存在着因果关系
E.
态度转变则一定会出现行为改变
【多选题】以下哪些是Command的属性
A.
ConnectionString
B.
CommandTest
C.
Connection
D.
ExecuteNoQuery()
相关题目: