
【名词&注释】
市场竞争(market competition)、最大值(maximum)、传播速度(propagation velocity)、不公正(injustice)、不公平(unfair)、数据量(data quantity)、重新启动(restart)、平等竞争(equal competition)、每一个(every single)、事实上(in fact)
[单选题]在美国,一等邮件的邮递是由邮政总局垄断的,但事实上(in fact)很多一等邮件的传递可以由电传来完成。这引起了电传业主的担心,如果邮政总局也办理电传业务的话,电传业的平等竞争(equal competition)的原则就会受到破坏。因为邮政总局享有不公正的竞争优势,它可以获益于对一等邮件业务的垄断权。以下哪项,如果是真的,最能减轻电传业主对不公平竞争的担心?( )
A. 办理一等邮件邮寄的受益,要高于办理一等邮件的电传。
B. 如果邮政总局办电传业务的话,它一定会获得对这一业务的垄断权。
C. 许多一等邮件是可以用特殊快件传递的,但因为费用太高,所以很难推广。
D. 有些一等邮件的传递是无法用电传办理的。
查看答案&解析
举一反三:
[单选题]●A _(72) is a collection of projects and other work that are grouped together to facilitate effective management of that work to meet strategic business objectives.(72)
A. program
B. portfolio
C. project of large size
D. PMO
[单选题]● 以下有关行业集中度的说法,错误的是(54)。(54)
A. 计算行业集中度要考虑该行业中企业的销售额、职工人数、资产额等因素
B. 行业集中度较小则表明该行业为竞争型
C. 计算行业集中度要涉及该行业的大多数企业
D. 稳定的集中度曲线表明市场竞争结构相对稳定
[单选题]
B. monitor
C. built
D. mouse-driven
A. deskB. monitor
B. built
C. mouse-driven
[单选题]相同屏幕尺寸的显示器,点距为(60)的分辨率较高,显示图形较清晰。
A. 0.24mm
B. 0.25mm
C. 0.27mm
D. 0.28mm
[单选题]When the system upon which a transport entity is running fails and subsequently restarts, the(66)information of all active connections is lost. The affected connections become half-open, as the side that did not fail does not yet realize the problem.The still active side of a half-open connection can close the connection using a(67)timer. This timer measures the time the transport machine will continue to await an(68)of a transmitted segment after the segment has been retransmitted the maximum number of times. When the timer(69), the transport entity assumes that either the other transport entity or the intervening network has failed. As a result, the timer closes the connection, and signals an abnormal close to the TS user.In the event that a transport entity fails and quickly restarts, half-open connections can be terminated more quickly by the use of the RST segment. The failed side returns an RST i to every segment i that it receives. When the RST i reaches the other side, it must be checked for validity based on the(70)number i, as the RST could be in response to an old segment. If the reset is valid, the transport entity performs an abnormal termination.
A. data
B. state
C. signal
D. control
[多选题]● 两个节点通过长度为L(米)、数据率为B (bps)、信号传播速度为C(米/秒)的链路连,要在其间传输长度为D (位)的数据。如果采用电路交换方式,假定电路的建立时为S(秒),则传送全部数据所需要的时间为(2) 。 如果采用分组交换方式,假定分组长度为P(位),其中分组头部长度为H(位),采用连续发送方式。忽略最后一个分组填的数据量,要使电路交换方式的传送时间小于分组交换方式的传送时间,则应满足的件是(3) 。
A. (2)
B. L/C
C. D/B+L/C
D. S+L/C
E. S+D/B+L/C
F. (3)
G. S H. S I. D/B J. L/C
[单选题]
B. 160万元
C. 120万元
D. 50万元
A. 40万元B. 160万元
B. 120万元
C. 50万元
[单选题]在人事管理系统中,计算企业员工的报酬可以利用面向对象的()技术,使系统可以用有相同名称、单不同核算方法的对象来计算专职员工的和兼职员工的报酬。
A. 多态
B. 继承
C. 封装
D. 复用
本文链接:https://www.zhukaozhuanjia.com/download/ozr3k5.html