正确答案: D
实事求是
题目:科技工作者追求真理、向真理靠近所必须坚持的思想路线是( )。
解析:D
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举一反三的答案和解析:
[单选题]下列属于系统软件的是()。
数据库管理软件
[单选题]计算机中时序产生器的作用是()。
产生时序脉冲
[多选题]从组网的功能来分,DDN的节点可分为()。
用户节点
接入节点
E1节点
解析:ABD
[多选题]WCDMA系统单元中CN负责与其他网络的连接和对UE的通信和管理,主要功能模块有()和HLR。
VMSC/VLR
GMSC
SGSN
GGSN
解析:ABCD
[单选题]通常空调风量的调整可以通过( )的变化来实现。
电动机转速
[单选题]传播模型测试中,测试站点应高于周围建筑物,但不能高出太多,平均高度高()层楼为宜。
2~3
[多选题]从结构上可以将城域网分为()
骨干层
汇聚层
接入层
解析:ABC
[单选题]接入网主要分为有线接入网和( )接入网
无线
[多选题]【Recently, telecommunication carriers has been building All-IP core networks in order to effectively support various kinds of fixed and mobile broadband services,such as up-and down-loading You tube and SNS(Social Networking Services)with rich video file,as well as broadband mobile Internet services. Such All-IP network is called NGN(Next Generation Network),which guarantees secure authentication and QoS such as the bandwidth and the delay. From the service point of view,convergence of fixed and mobile communications,known as FMC(Fixed Mobile Convergence)is becoming a key increasing new services and expanding the market.】 Form the paragraph above,we can see that()can be defined as a network that can effectively support various kinds of fixed and mobile broadband services,with guaranteed QoS in terms of()and etc. And the key to develop new services and gain larger market share should be()
NGN
social network A.data rate
availability
band width, delay A.mobile communications
All-IP core network
解析:C,D,D