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1、查看自测成绩一、new单选（共有题目12题）1.SQL语言中，删除一个表的命令是（ ）A.DELETEB.DROPC.CLEARD.REMOVE你的答案：标准答案：B解答过程：SQL语言中，建立一个表的命令是CREATE，对表进行修改的命令是ALTER，删除一个表的命令是DROP，另外还有表中数据的插入，删除，查询命令分别为INSERT，DELETE 和SELECT。2.数据库DB、数据库系统DBS、数据库管理系统DBMS之间的关系是（ ）A.DB包括DBS、DBMSB
2、.DBMS包括DB、DBSC.DBS包括DBMS、DBD.没有任何关系你的答案：标准答案：C解答过程：3.在超市营业过程中，每个时段要安排一个班组上岗值班，每个收款口要配备两名收款员配合工作，共同使用一套收款设备为顾客服务，在超市数据库中，实体之间属于一对一关系的是（ ）enforcedthermalinsulationstartscheckingsystem,issuedbythethermalinsulationconstructionbeforeyoustarttonotice,
3、transferinspectionofupperandloweroperationandtransferofrecords.Foroutdooroperation,pipelineequipmenttoeffectivelycarryouttheinsulationwaterproofmeasuresfailtoinstallprotectivepanelsinpartwiththreetarpaulincover,topreventinsulationfrommoisture.Insulation
4、seamMichaelJackson5mm,joints,joints>100mm,insulationthicknesstolerance(+10MM~–5mm),appropriatematerialelasticbanding,spacingaccordingtothedesignrequirements,rigidinsulationsoftmaterialsforconstructionjointstight;Andlarge-diameterverticalpipeforhightempe
5、raturepipelineinstrictaccordancewithdesigndrawingscalledfortheestablishmentofexpansionjointsandholdingbracket;Designrequirementsintoaremovabletypeofinsulation,instrictaccordancewithspecificationsdisconnectfromtheotherinsulation;Surfaceinsulationboardsin
6、thetechnologyofplasteringconstructionofwovenclothtopreventpollutionandprotectivepanelsflushwiththesurfaceinterface,tightandclean.Sitemeasurementofinsulationboardsforelbowshapecutting,ensurethateachpieceoflappedtraffic,arctransitionofnatural,beautiful,sc
7、rewsup.Stampedeoutsideconstructionpersonnelisstrictlyprohibitedandshelveobjectsdirectlyontheoutershield.Inordertopreventthepollution-proneheater,channelareaofsecondarypollutionoflarge-diameterpipesandotherequipment,weavingcloth,anderectionoftheseparatio
8、nplatformforpreservation.Thermalinsulationconstruction,on-hooktackweldedtotheconsolidatedline,toensureevenlyspaced,andthehooknaileddown...Seenextpageflowchartmanagementprocess.7.2GeneralrequirementsforprotectiveproductprotectionA
