题目内容
阅读下面短文，回答以下问题。“多媒体”是近几年才流行起来的新名词，它是融合多种传播媒介的手段于一体的设施，具体来说，就是融合电话、电视和电脑这三种主要传媒的性能于一体，并在原有基础上再衍生出其他相关的新用途的设施。人们通过电话，即使相隔万里也可以双向交谈，但可惜只能听到声音(近十多年来传真机通过电话线可传送图文)，却不能见到谈话人形象；人们在电视机上可以看到图像和听到声音，但只能单向、被动地接受，而不能双向交流；电脑是处理和储存信息的工具。在终端机的荧屏上人们可以看到各种数据和图像。而通过多媒体，既可以接收，也可以发送各种声音、形象、文字、图表和数据。把家庭和企业里的多媒体与全国范围内的企业、商店、银行、学校、医院、 图书馆、电脑数据库、新闻机构、娱乐场所、电视台、会议厅的多媒体连接起来，形成互相交叉的网络，这个网络就是目前美国政府正在着手进行的“信息高速公路”，正式名称是“全国信息基础设施”。这里是借用50年代美国修建了全国高速公路的干线，对加速商品和劳务的流通，推动全国经济发展曾起了巨大的作用之意。具体来说，就是在全国范围内，铺设光导纤维的电缆作为信息流通的主干线(只有新型的光缆才能有这么大的容量)，通过光缆和多媒体， 向全国提供教育、卫生、商务、金融、文化、娱乐等等颇为广泛的服务。(佚名《多媒体》) 下面几项中，表示“多媒体”优于电话、电视和电脑的特有功能的一项是（）。
查看答案
搜索结果不匹配？点我反馈
更多问题
开放性气胸的紧急处理原则( )
______ (许多传统工艺过时了)and should be replaced by modem science.
In our system of education today, examinations are a common feature. Our present education system has often been criticized as too examination-oriented. However, one must remember that in offices and other areas of work, examinations still feature clearly. There is no doubt that the fear and influence of examinations cause much preparation work. So it appears that examinations, whether considered good or bad, would stay for a while as a test of human knowledge. Examinations are meant to test the intellect of a person, how much he knows or how he has learnt from a particular course. It is designed to make students study, which should be their immediate mission in life. In our competitive world of today, examinations have a highly selecting or filtering role. In the university, students have to pass annual examinations before they are allowed to continue, or study a harder syllabus. The examination results would show whether the student is ready to start the next phase of his course. Moreover, for entrance into a university, pre-university examination results would provide a guide as to whether a student has the minimum qualifications necessary. This is because the number of seats in the university is limited and only deserving, hard-working students should be given a place. In offices, whether government or private ones, examination results show clearly whether a person is fit for promotion. The results indicate how much he knows about the work. In our schools, examinations play several roles. Yearly school examinations help to grade students into different classes. Government examinations help to stream students into different classes so that they can pursue a specific line of study. In all these cases, examinations inculcate (反复灌输) a spirit of hard work and competition. Students or office workers can refresh their mind again and again on what they have learnt. This maintains a certain individual and overall standard of knowledge. Besides helping people to refresh their mind on what have been learnt, examinations can also inculcate a spirit of______________.
患者，女性，48岁，发现颈部肿物1个月。颈部彩超显示：甲状腺右叶见一4cm×3cm的孤立性结节，放射性核素扫描为冷结节，T3、T4平正常。病理检查：肿瘤类圆形，边界清、有包膜，包膜上可见扩张血管。镜下，瘤组织由大小较一致的小型滤泡组成，细胞无明显异型性，包膜血管内见有部分滤泡样组织，其表面有纤维素覆盖。 该患者最可能的病理诊断是
微信支付 
支付宝支付