1、1 .(单项选择题)Many companies use () to train their employees.(此题 2.5 分)A. technologyB. entertainmentC. multimedia applicationsD. animation答案:C解析:无2 .(单E-commerce does business through ().(此题 2.5 分)A. face-to-face meetingB. computerC. wire-photoD. file flow答案:D解析:无3 .(单项选择题)Every transaction in electroni
2、c commerce includes information flow, commercial flow, () and material flow.(此题 2.5 分)A. data flowB. currency flowC. merchandise flowD. file flowD. all the above答案:A解析:无25 .(单项选择题)Each() is a unit of both atomicity and consistency.体题 2.5 分)A. transactionB. databaseC. storage structureD. schema detai
3、ls答案:A解析:无26 .(单项选择题)Please find the item that is not belong to the DBA ().(此题 2.5 分)A. storage structure and access method definitionB. schema definitionC. integrity constrain specificationD. DDL答案:D解析:无27 .(单When power is removed, information in the semiconductor memory is().(此题2.5分)A. reliableB.
4、lostC. manipulatedD. remain答案:B解析:无28.(单The control unit fetches () from memory and decodes them.(此题 2.5 分)A. dataB. informationC. resultsD. instructions答案:D 解析:无答案:B解析:无4 .(单To open Internet Explorer, just click Start, point to ( ) , and then click Internet Explorer.(此题 2.5 分)A. ProgramsB. ViewC. L
5、ayoutD. Internet and EDI答案:A解析:无5 .(单With Internet Explorer and an Internet connection, you can search for and view information on the ().(此题 2.5 分)A. Active DesktopB. ProgramsC. Phone DialerD. World Wide Web答案:D解析:无6 .(单项选择题)Two common applications of LANs are ( ) resource sharing and information r
6、esource sharing.(此题 2.5 分)A. softwareB. computerC. networkD. hardware答案:D解析:无7 .(单When a ( ) is used, all the devices in the network are connected to a single cable.体题 2.5 分)A. bus networkB. ring networkC. star networkD. network答案:A解析:无8 .(单() uses commands that are easier for programmers to underst
7、and than are machine language commands.(此题 2.5 分)A. Assembly languageB. High-level languageC. C languageD. C+ language 答案:A解析:无9 .(单项选择题)Most operating system have a standard set of ( ) to handle the processing of all input and output instructions.(此题 2.5 分)A. spreadsheetB. control instructionsC. I/
8、O operationD. data table答案:B解析:无10 .(单The () serves as an interface between hardware and software.(此题 2.5 分)A. systemB. application programC. operating systemD. control unit答案:C解析:无11 .(单The raw data are stored on the disk using the ().(此题 2.5 分)A. data dictionaryB. file systemC. DBMSD. DBA答案:B解析:无1
9、2 .(单A periodic refresh is needed to restore the information for the ().(此题2.5 分)A. SRAMB. DRAMC. EPROMD. EEPROM答案:B解析:无13 .(单() is a storage location inside the processor.(此题 2.5 分)A. A registerB. ALUC. ControlD. Memory答案:A 解析:无14 .(单A processor is composed of two functional units, they are ().(此题
10、2.5 分)A. an arithmetic/logic unit and a storage unitB. a control unit and some registersC. a control unit and an arithmetic/logic unitD. some registers an arithmetic/logic unit答案:C解析:无15 .(单( ) refers to the number of individual dots of color, known as pixels, contained on a display.(此题 2.5 分)A. Dot
11、 PitchB. ResolutionC. Refresh RateD. Scan Style答案B解析:无16 .(单Every transaction in electronic commerce includes information flow, commercial flow, () and material flow.(此题 2.5 分)A. fileB. dataC. softwareD. virus答案:D解析:无17 .(单项选择题)The () hidden in the infected system does not break outimmediately; inst
12、ead, it needs certain time or some condition before it breaks out(此题2.5分)A. fileB. dataC. softwareD. virus答案:D解析:无18.(单To open Internet Explorer, just click Start, point to ( ) , and then click Internet Explorer.体题 2.5 分)A. ProgramsB. ViewC. LayoutD. Control Panel答案:A 解析:无19 .(单项选择题)E-commerce do bu
13、siness through ().(此题 2.5 分)A. face-to-face meetingB. computerC. wire-photoD. Internet and EDI答案:D解析:无20 .(单项选择题)An advantage of a ring network is that it needs less ().(此题 2.5 分)A. computerB. networkC. cableD. information答案:C解析:无21 .(单项选择题)An ISP supplies a () that you can dial from your computer t
14、o log on the internet server.体题 2.5 分)A. public keyB. private keyC. service numberD. help file答案:c解析:无22 .(单项选择题)Software engineering is some certain ().(此题 2.5 分)A. programsB. methodsC. productsD. managements答案:B解析:无23 .(单项选择题)Assembly-language instructions are a series of ().(此题 2.5 分)A. Os and IsB. abstract codesC. machine codesD. words答案:B解析:无24 .(单A characteristic of operating system is ().(此题 2.5 分)A. resource managementB. memory managementC. error recovery