【名词&注释】
消防工作(fire control work)、总经理(general manager)、误操作(misoperation)、交直流(ac dc)、领导小组(leading group)、生产部门(production department)、无线电报(marconigram)、用户数(user number)、直流工作地、传真电报(electrograph)
[单选题]3G业务发展滞后手机上网用户数(user number)快速增加，这主要是因为3G业务提供了（ ）。
A. 比2G业务更快的移动上网速率
B. 比2G业务更好的移动语音通信质量
C. 比电脑上网更快的接入速率
D. 比电脑上网更丰富的上网内容
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举一反三：
[单选题]在数字交换中表示模拟用户接口电路的功能时，字母“H”表示的是()。
A. 馈电
B. 测试控制
C. 混合电路
D. 编译码和滤波
[单选题]全公司消防工作由公司()负责。
A. 安全生产部门;
B. 分管安全领导;
C. 安全领导小组;
D. 总经理;
[多选题]国内公众电报业务，根据不同的传递方式和业务性质可分为（）和用户电报。
A. 国内电报
B. 国内礼仪电报
C. 国内船舶无线电报(marconigram)
D. 传真电报(electrograph)
[单选题]以下关于ATM业务特点的叙述中，正确的是（ ）。
A. ATM业务提供永久或半永久连接，不具备交换功能
B. ATM采用同步时分复用，有效利用了带宽
C. ATM采用高速电路交换，降低了网络时延
D. ATM能满足低速到高速多层次的业务需求
[多选题]无线站点维护安全管理中，维护人员应注意区分()等地气的连接情况，避免误操作引起设备的接地悬空而遭雷击。
A. 交直流工作地;
B. 设备保护地;
C. 防雷接地;
D. 火线颜色;
E. 地、零线颜色;
[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
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