【名词&注释】
差异性(difference)、运营商(operation business)、国内外、数字传输(digital transmission)、主管部门(department in charge)、支付违约金(payment of breach of contractdamages)、电信终端设备(telecommunication terminal equipment)、服务费(service charge)、集中性市场策略
[单选题]根据国内外相关标准，ADSL系统的下行数字传输速率达到6Mbps以上时，必须采用（）技术。
A. QAM
C. CAP
D.
E. DMT
G. DMT3
查看答案&解析
举一反三：
[多选题]【 The Internet ofthings (IoT) is the inter-networking ofphysical devices，vehicles ，buildings ，and other items embedded with electronics ，software，sensors，actuators，and network connectivity which enable these objects to collect and exchange data. In 2013 the Global Standards Initiative on Internet ofThings (IoT-GSI) defined the 10T as " a global infrastructure for the information society， enabling advanced services by interconnecting (physical and virtual) things based on existing and evolving interoperable information and communication technologies" and for these purposes a "thing" is "an object ofthe physical world (physical things) or the information world (virtual things). which is capable ofbeing identified and integrated into communication networks". The 10T allows objects to be sensed or controlled remotely across existing network infrastructure ，creating opportunities for more direct integration of the physical world into computer - based systems，and resulting in improved efficiency. Accuracy and economic benefit in addition to reduced human intervention. When IoT is augmented with sensors and actuators，the technology becomes an instance of the more general class of cyber physical systems，which also encompasses technologies such as smart grids，virtual power plants ，smart homes ，intelligent transportation and smart cities. Each thing is uniquely identifiable through its embedded computing system but is able to interoperate within the existing Intemet infrastructure. Experts estimate that the 10T wi l1 consist of about 30 bi l1ion objects by 2020. 】 Based on the paragraph above，we know that the applications ofthe 10T include (98) . RFID technology makes it possible to automatically (99) every object on the Internet ofthings，and is the foundation ofnetworking. From the industry point of view，IoT is mainly involved in industries including (100).
A. environmental monitoring
B. intelligent transportation
C. energy management
D. all ofthe above
[单选题]如果企业资源不足，比较适宜选择（ ）
A. 无差异市场策略
B. 差异性市场策略
C. 集中性市场策略
D. 同质型市场策略
[单选题]由于运营商自身的原因，逾期未能安装电信终端设备(telecommunication terminal equipment)并开通的，应当（）。
A. 向主管部门缴纳罚金
B. 免收用户服务费(service charge) C、给予用户打折优惠
C. 向用户支付违约金
[多选题]GPS 系统可以由（）组成。
A. GPS 卫星系统
B. 地球站
C. 地面控制系统
D. 用户设备
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