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阅读短文,根据其内容回答问题。 Imagine having a bedroom that interacts with you. If you're sad, it will arrange for some of your friends to come over to cheer you up. If you're happy, it might respond by playing your favorite game with you. Does it sound like something out of a science-fiction movie? Well, it's really something out of the Georgia Institute of Technology. Irfan Essa works at the computer lab there. He has developed a computer system that can look at you and recognize your mood. He calls it the 'expression recognition system.' Essa says, 'We are trying to get computers to act like a human brain. But the human brain is not like one computer, it is like many working together.' In Essa's system, many computers work together. First, a camera in the bedroom takes a picture of your face. The camera feeds the image to a computer. In the computer's memory, there are pictures showing how the muscles of your face move when you are in different moods. For example, cheek muscles move in one way when you are happy and smiling and in another way when you are nervous and tense. The computer compares your picture to the face-muscle images stored in its memory. It tries to find the best match. That's how it figures out your mood! Then the computer sends messages to other computers in the system. If you look happy, a computer may put on lively music. If you look tired and discouraged, a different computer may turn on the TV for you. How could the 'expression recognition system' help us in important ways? Essa thinks that the system can help us create computers that are better teachers. Many people learn new skills through computer programs. 'When I teach, I look at people's faces,' Essa explains. 'If my students look confused, I know they didn't understand. With this technology, a computer canal-so know if a student is learning.' Today, this new technology can be found only in labs, but Essa predicts we'll see it out of the lab in a few years. So get ready. One day, you might walk into a room that will soon become your best friend. 1. Can the new computer system look at you and recognize your mood? ___________________________________________________________ 2. What happens first in the bedroom in Essa's system? ___________________________________________________________ 3. Will the computer put on lively music or turn on the TV if you look happy? ___________________________________________________________ 4. How does the 'expression recognition system' make computers better teachers? ___________________________________________________________ 5. What will future rooms be like? ___________________________________________________________
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【单选题】确定胸10平面损伤的皮肤感觉关键点是
A.
脐水平
B.
脐下2cm
C.
脐上2cm
D.
脐下4cm
E.
脐上4cm
【单选题】有关物质的量浓度溶液配制 的下列说法中正确的是(    )
A.
将1mol NaCl溶于1L水中所得溶液物质的量浓度为1mol·L -1
B.
将0.1mol NaCl投入100mL容量瓶中加水至刻度线,充分振荡后,浓度为1 mol·L -1
C.
需要48mL 0.1 mol·L -1 的Na 2 CO 3 溶液,配制时应选用50mL容量瓶
D.
将4.0g NaOH放入烧杯并加水搅拌冷却后全部转移到1000mL容量瓶中,加水至刻度,所得溶液的浓度为1 mol·L -1
【判断题】图形算量软件中,平齐板顶的功能,不仅可以找平板,也可以找斜板,拱板等
A.
正确
B.
错误
【单选题】刻画离散程度相对指标的是( )
A.
Z分数
B.
方差
C.
标准差
D.
离散系数
【多选题】中央银行作为政府的银行,其主要职能是( )。
A.
代理国库
B.
充当政府的金融代理人
C.
为政府提供资金融通
D.
集中存款准备
E.
作为国家的最高金融管理当局
【单选题】关于配制NaCl溶液的叙述不正确的是(  )
A.
托盘天平称取58.5g食盐,加1升水配制成溶液,NaCl溶液浓度为1mol?L -1
B.
转移时,要用玻璃棒引流
C.
溶解食盐的烧杯要洗涤2~3次并将洗涤液转移到容量瓶中
D.
搅拌可加速溶解
【单选题】下列实验操作中,正确的是(  )
A.
配制5%NaCl溶液时,将称量好的NaCl放入烧杯中加适量的水搅拌溶解
B.
配制1mol/L NaOH溶液时,将溶解后的NaOH溶液立即注入容量瓶
C.
配制0.1 mol/L H 2 SO 4 溶液时,将量取的浓H 2 SO 4 放入容量瓶中加水稀释
D.
分液操作时,先将分液漏斗中的下层液体放出,然后再将上层液体从下口放出
【单选题】刻画离散程度相对指标的是( )
A.
标准差
B.
方差
C.
离散系数
D.
Z 分数
【单选题】刻画数据离散程度的各种指标,以下错误的一项是
A.
方差反映了每个变量值的离散情况
B.
标准差的度量单位与原变量相同
C.
总体方差是利用均数定义的
D.
四分位数间距与数据的最大值与最小值无关
E.
极差的大小与中位数的大小有关
【单选题】下列实验操作中,正确的是 (    )
A.
配制5%NaCl溶液时,将称量的NaCl放入烧杯中加计量的水搅拌溶解
B.
配制1mol·L - 1 NaOH溶液时,将溶解后的NaOH溶液立即注入容量瓶
C.
配制0.1mol/L的H 2 SO 4 溶液时,将量取的浓H 2 SO 4 放入容量瓶中加水稀释
D.
分液操作时,先将分液漏斗中的下层液体放出,然后再将上层液体放出
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