单选题以下说法错误的是 (20) 。
单选题下述说法不正确的是 (48) 。
单选题在非授权的情况下,使用Sniffer软件接收并截获网络上传输的信息,这种攻击方式属于______。 A.放置特洛伊木马程序 B.DDoS攻击 C.网络欺骗 D.网络监听
单选题 算术表达式采用逆波兰式表示时不用括号,可以利用{{U}} {{U}} 21
{{/U}} {{/U}}进行求值。与逆波兰式ab-cd+*对应的中缀表达式是{{U}} {{U}} 22
{{/U}} {{/U}}。
单选题So it is today.Schedule disaster functional misfits,and system bugs all arise because the left hand doesn't know what the right hand is doing.As work ______, the several teams slowly change the functions,size, and speeds of their own programs, and they explicitly or implicitly ______ their assumptions aboutme inputs available and the uses to be made of the outputs. For example, the implementer of a program-overlaying function may run into problems and reduce speed relying on statistics that show how ______ this function will arise in application programs.Mean-while back at the ranch, his neighbor may be designing a major part of the supervisor so that it criticallydepends upon the speed of this function.This change in speed itself becomes a major specificationchange, and it needs to be proclaimed abroad and weighed from a system point of view. How, then, shall teams ______ with one another? In as many ways as possible. ·Informally.Good telephone service and clear definition of intergroup dependencies will encourage the hundreds of calls upon which common interpretation of written documents depends. ·Meetings.Regular project meetings, with one team after another giving technical briefings, are ______.Hundreds of minor misunderstandings get smoked out this way. ·Workbook.A formal project workbook must be started at the beginning.
单选题Soon, more of the information we receive via the Internet could come (71) in digital wrappers. Wrappers are made up (72) software code that's targeted to do specific things with the data (73) within them, such as helping to define queries for search engines. They also keep (74) from (75) access to that code.
单选题某软件公司根据技术发展的需要,从另一软件公司购买一项现有的软件技术,并与其签定了技术转让协议。该软件公司在购买该项软件技术的合同中应注意 (21) 问题。
单选题以下标准代号中,{{U}} (11) {{/U}}不属于国家标准代号。
单选题以下关于DHCP服务的说法中正确的是______。 A.在一个子网内只能设置一台DHCP服务器,以防止冲突 B.在默认情况下,客户机采用最先到达的DHCP服务器分配的IP地址 C.使用DHCP服务,无法保证某台计算机使用固定IP地址 D.客户端在配置时必须指明DHCP服务器的IP地址,才能获得DHCP服务
单选题可行性分析的目的是在尽可能短的时间内用尽可能小的代价来确定问题是否有解。不属于在可行性分析阶段进行的工作是 (20) 。可行性分析不包括对待开发软件进行 (21) 分析。
单选题算术表达式x-(y+c)*8的后缀式是______(“-”、“+”、“*”表示算术的减、加、乘运算,运算符的优先级和结合型遵循惯例)。
单选题考查下列文法:C(VT,VN,E,P) 其中:VT=+,*,(,),i VN=E,T,F E是开始符号 P: E→E+T|T T→T*F|F F→(E)|i F*F+T是该文法的一个句型,其中, (61) 是句柄, (62) 是素短语。 (63) 是该句型的直接推导, (64) 是该句型的最左推导。 (65) 是该文法的一个句子。
单选题 (10) 是指在经济、技术、科学及管理等社会实践中,对重复事物和概念通过制订、发布和实施标准达到统一,以获得最佳秩序和最大社会效益。
单选题设商店有10 元、5 元、2 元和1 元的零币,每种零币的数量充足。售货员给顾客找零钱时,零币的数量越少越好。例如给顾客找零29 元:先选2 张10 元币,然后选择1 张5 元币,再选择两张2 元币。以上的找零钱方法采用了( ) 策略。
单选题Output is data that has been processed into useful form called{{U}} {{/U}}. That is a computer processes input into output. A.data B.information C.interface D.system
单选题以下关于高级程序设计语言实现的编译和解释方式的叙述中,正确的是()。
单选题中缀表达式A-(B+C/D)×E的后缀形式是 (41) 。 A.ABC+D/×E- B.ABCD/+E×- C.AB-C+D/E× D.ABC-+D/E×
单选题非空的循环单链表head的尾结点P满足 (45) 。
单选题若广义表L=((a,b,c),e),则L的长度和深度分别为______。
A.2和1
B.2和2
C.4和2
D.4和1
