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有两个并发执行的进程P1和P2共享初值为1的变量xP1对x加1P2对x减1加1和减1操作的指令序列分别如下所示 //加1操作//减1操作 loadR1x//取x到寄存器Rl中loadR2x incR1decR2 storexR1//将R1的内容存入xstorexR2 两个操作完成后x的值
若某通信链路的数据传输速率为2400bps采用4相位调制则该链路的波特率是
下列选项中在用户态执行的是
在系统总线的数据线上不可能传输的是
AncientGreekphilosopherAristotleviewedlaughterasabodilyexerciseprecioustohealthBut---__1___someclaimstothecontrarylaughingprobablyhaslittleinfluenceonphysicalfitnessLaughterdoes__2___short-termchangesinthefunctionoftheheartanditsbloodvessels___3_heartrateandoxygenconsumptionButbecausehardlaughterisdifficultto__4__agoodlaughisunlikelytohave__5___benefitsthewaysaywalkingorjoggingdoes __6__insteadofstrainingmusclestobuildthemasexercisedoeslaughterapparentlyaccomplishesthe__7__studiesdatingbacktothe1930’sindicatethatlaughter__8___musclesdecreasingmuscletoneforupto45minutesafterthelaughdiesdown Suchbodilyreactionmightconceivablyhelp_9__theeffectsofpsychologicalstress.Anywaytheactoflaughingprobablydoesproduceothertypesof___10___feedbackthatimproveanindividual’semotionalstate.__11____oneclassicaltheoryofemotionourfeelingsarepartiallyrooted____12___physicalreactions.Itwasarguedattheendofthe19thcenturythathumansdonotcry___13___theyaresadbuttheybecomesadwhenthetearsbegintoflow Althoughsadnessalso____14___tearsevidencesuggeststhatemotionscanflow__15___muscularresponses.Inanexperimentpublishedin1988socialpsychologistFritzStrackoftheUniversityofwürzburginGermanyaskedvolunteersto__16___apeneitherwiththeirteeth-therebycreatinganartificialsmile–orwiththeirlipswhichwouldproducean__17___expression.Thoseforcedtoexercisetheirenthusiasticallytofunnycatoonsthandidthosewhosemonthswerecontractedinafrown____19___thatexpressionsmayinfluenceemotionsratherthanjusttheotherwayaround__20__thephysicalactoflaughtercouldimprovemood
下列选项中对正确接收到的数据帧进行确认的MAC协议是
材料是关于央行公布的跨国贸易人民币结算试点办法请写作不超过500字的消息
AncientGreekphilosopherAristotleviewedlaughterasabodilyexerciseprecioustohealthBut---__1___someclaimstothecontrarylaughingprobablyhaslittleinfluenceonphysicalfitnessLaughterdoes__2___short-termchangesinthefunctionoftheheartanditsbloodvessels___3_heartrateandoxygenconsumptionButbecausehardlaughterisdifficultto__4__agoodlaughisunlikelytohave__5___benefitsthewaysaywalkingorjoggingdoes __6__insteadofstrainingmusclestobuildthemasexercisedoeslaughterapparentlyaccomplishesthe__7__studiesdatingbacktothe1930’sindicatethatlaughter__8___musclesdecreasingmuscletoneforupto45minutesafterthelaughdiesdown Suchbodilyreactionmightconceivablyhelp_9__theeffectsofpsychologicalstress.Anywaytheactoflaughingprobablydoesproduceothertypesof___10___feedbackthatimproveanindividual’semotionalstate.__11____oneclassicaltheoryofemotionourfeelingsarepartiallyrooted____12___physicalreactions.Itwasarguedattheendofthe19thcenturythathumansdonotcry___13___theyaresadbuttheybecomesadwhenthetearsbegintoflow Althoughsadnessalso____14___tearsevidencesuggeststhatemotionscanflow__15___muscularresponses.Inanexperimentpublishedin1988socialpsychologistFritzStrackoftheUniversityofwürzburginGermanyaskedvolunteersto__16___apeneitherwiththeirteeth-therebycreatinganartificialsmile–orwiththeirlipswhichwouldproducean__17___expression.Thoseforcedtoexercisetheirenthusiasticallytofunnycatoonsthandidthosewhosemonthswerecontractedinafrown____19___thatexpressionsmayinfluenceemotionsratherthanjusttheotherwayaround__20__thephysicalactoflaughtercouldimprovemood
在虚拟内存管理中地址变换机构将逻辑地址变换为物理地址形成该逻辑地址的阶段是
主机甲与主机乙之间已建立一个TCP连接主机甲向主机乙发送了3个连续的TCP段分别包含300字节400字节和500字节的有效载荷第3个段的序号为900若主机乙仅正确接收到第1和第3个段则主机乙发送给主机甲的确认序号是
某文件系统为一级目录结构文件的数据一次性写入磁盘已写入的文件不可修改但可多次创建新文件请回答如下问题 1在连续链式索引三种文件的数据块组织方式中哪种更合适要求说明理由为定位文件数据块需在FCB中设计哪些相关描述字段 2为快速找到文件对于FCB是集中存储好还是与对应的文件数据块连续存储好要求说明理由
AncientGreekphilosopherAristotleviewedlaughterasabodilyexerciseprecioustohealthBut---__1___someclaimstothecontrarylaughingprobablyhaslittleinfluenceonphysicalfitnessLaughterdoes__2___short-termchangesinthefunctionoftheheartanditsbloodvessels___3_heartrateandoxygenconsumptionButbecausehardlaughterisdifficultto__4__agoodlaughisunlikelytohave__5___benefitsthewaysaywalkingorjoggingdoes __6__insteadofstrainingmusclestobuildthemasexercisedoeslaughterapparentlyaccomplishesthe__7__studiesdatingbacktothe1930’sindicatethatlaughter__8___musclesdecreasingmuscletoneforupto45minutesafterthelaughdiesdown Suchbodilyreactionmightconceivablyhelp_9__theeffectsofpsychologicalstress.Anywaytheactoflaughingprobablydoesproduceothertypesof___10___feedbackthatimproveanindividual’semotionalstate.__11____oneclassicaltheoryofemotionourfeelingsarepartiallyrooted____12___physicalreactions.Itwasarguedattheendofthe19thcenturythathumansdonotcry___13___theyaresadbuttheybecomesadwhenthetearsbegintoflow Althoughsadnessalso____14___tearsevidencesuggeststhatemotionscanflow__15___muscularresponses.Inanexperimentpublishedin1988socialpsychologistFritzStrackoftheUniversityofwürzburginGermanyaskedvolunteersto__16___apeneitherwiththeirteeth-therebycreatinganartificialsmile–orwiththeirlipswhichwouldproducean__17___expression.Thoseforcedtoexercisetheirenthusiasticallytofunnycatoonsthandidthosewhosemonthswerecontractedinafrown____19___thatexpressionsmayinfluenceemotionsratherthanjusttheotherwayaround__20__thephysicalactoflaughtercouldimprovemood
AncientGreekphilosopherAristotleviewedlaughterasabodilyexerciseprecioustohealthBut---__1___someclaimstothecontrarylaughingprobablyhaslittleinfluenceonphysicalfitnessLaughterdoes__2___short-termchangesinthefunctionoftheheartanditsbloodvessels___3_heartrateandoxygenconsumptionButbecausehardlaughterisdifficultto__4__agoodlaughisunlikelytohave__5___benefitsthewaysaywalkingorjoggingdoes __6__insteadofstrainingmusclestobuildthemasexercisedoeslaughterapparentlyaccomplishesthe__7__studiesdatingbacktothe1930’sindicatethatlaughter__8___musclesdecreasingmuscletoneforupto45minutesafterthelaughdiesdown Suchbodilyreactionmightconceivablyhelp_9__theeffectsofpsychologicalstress.Anywaytheactoflaughingprobablydoesproduceothertypesof___10___feedbackthatimproveanindividual’semotionalstate.__11____oneclassicaltheoryofemotionourfeelingsarepartiallyrooted____12___physicalreactions.Itwasarguedattheendofthe19thcenturythathumansdonotcry___13___theyaresadbuttheybecomesadwhenthetearsbegintoflow Althoughsadnessalso____14___tearsevidencesuggeststhatemotionscanflow__15___muscularresponses.Inanexperimentpublishedin1988socialpsychologistFritzStrackoftheUniversityofwürzburginGermanyaskedvolunteersto__16___apeneitherwiththeirteeth-therebycreatinganartificialsmile–orwiththeirlipswhichwouldproducean__17___expression.Thoseforcedtoexercisetheirenthusiasticallytofunnycatoonsthandidthosewhosemonthswerecontractedinafrown____19___thatexpressionsmayinfluenceemotionsratherthanjusttheotherwayaround__20__thephysicalactoflaughtercouldimprovemood
在缺页处理过程中操作系统执行的操作可能是 Ⅰ.修改页表 Ⅱ.磁盘I/O Ⅲ.分配页框
同一性配置
编者按
偏移寻址通过将某个寄存器内容与一个形式地址相加而生成有效地址下列寻址方式中不属于偏移寻址方式的是
一个长度为LL≥1的升序序列S处在第[L/2]个位置的数称为s的中位数例如若序列S11113151719则S1的中位数是15两个序列的中位数是含它们所有元素的升序序列的中位数例如若S2=246820则S1和S2的中位数是11现有两个等长升序序列A和B试设计一个在时间和空间两方面都尽可能高效的算法找出两个序列A和B的中位数 要求 1给出算法的基本设计思想 2根据设计思想采用C或C++或Java语言描述算法关键之处给出注释 3说明你所设计算法的时间复杂度和空间复杂度
新闻选择中需要注意的平衡关系
某计算机处理器主频为50MHz采用定时查询方式控制设备A的I/O查询程序运行一次所用的时钟周期数至少为500在设备A工作期间为保证数据不丢失每秒需对其查询至少200次则CPU用于设备A的I/O的时间占整个CPU时间的百分比至少是
报道策划
AncientGreekphilosopherAristotleviewedlaughterasabodilyexerciseprecioustohealthBut---__1___someclaimstothecontrarylaughingprobablyhaslittleinfluenceonphysicalfitnessLaughterdoes__2___short-termchangesinthefunctionoftheheartanditsbloodvessels___3_heartrateandoxygenconsumptionButbecausehardlaughterisdifficultto__4__agoodlaughisunlikelytohave__5___benefitsthewaysaywalkingorjoggingdoes __6__insteadofstrainingmusclestobuildthemasexercisedoeslaughterapparentlyaccomplishesthe__7__studiesdatingbacktothe1930’sindicatethatlaughter__8___musclesdecreasingmuscletoneforupto45minutesafterthelaughdiesdown Suchbodilyreactionmightconceivablyhelp_9__theeffectsofpsychologicalstress.Anywaytheactoflaughingprobablydoesproduceothertypesof___10___feedbackthatimproveanindividual’semotionalstate.__11____oneclassicaltheoryofemotionourfeelingsarepartiallyrooted____12___physicalreactions.Itwasarguedattheendofthe19thcenturythathumansdonotcry___13___theyaresadbuttheybecomesadwhenthetearsbegintoflow Althoughsadnessalso____14___tearsevidencesuggeststhatemotionscanflow__15___muscularresponses.Inanexperimentpublishedin1988socialpsychologistFritzStrackoftheUniversityofwürzburginGermanyaskedvolunteersto__16___apeneitherwiththeirteeth-therebycreatinganartificialsmile–orwiththeirlipswhichwouldproducean__17___expression.Thoseforcedtoexercisetheirenthusiasticallytofunnycatoonsthandidthosewhosemonthswerecontractedinafrown____19___thatexpressionsmayinfluenceemotionsratherthanjusttheotherwayaround__20__thephysicalactoflaughtercouldimprovemood
AncientGreekphilosopherAristotleviewedlaughterasabodilyexerciseprecioustohealthBut---__1___someclaimstothecontrarylaughingprobablyhaslittleinfluenceonphysicalfitnessLaughterdoes__2___short-termchangesinthefunctionoftheheartanditsbloodvessels___3_heartrateandoxygenconsumptionButbecausehardlaughterisdifficultto__4__agoodlaughisunlikelytohave__5___benefitsthewaysaywalkingorjoggingdoes __6__insteadofstrainingmusclestobuildthemasexercisedoeslaughterapparentlyaccomplishesthe__7__studiesdatingbacktothe1930’sindicatethatlaughter__8___musclesdecreasingmuscletoneforupto45minutesafterthelaughdiesdown Suchbodilyreactionmightconceivablyhelp_9__theeffectsofpsychologicalstress.Anywaytheactoflaughingprobablydoesproduceothertypesof___10___feedbackthatimproveanindividual’semotionalstate.__11____oneclassicaltheoryofemotionourfeelingsarepartiallyrooted____12___physicalreactions.Itwasarguedattheendofthe19thcenturythathumansdonotcry___13___theyaresadbuttheybecomesadwhenthetearsbegintoflow Althoughsadnessalso____14___tearsevidencesuggeststhatemotionscanflow__15___muscularresponses.Inanexperimentpublishedin1988socialpsychologistFritzStrackoftheUniversityofwürzburginGermanyaskedvolunteersto__16___apeneitherwiththeirteeth-therebycreatinganartificialsmile–orwiththeirlipswhichwouldproducean__17___expression.Thoseforcedtoexercisetheirenthusiasticallytofunnycatoonsthandidthosewhosemonthswerecontractedinafrown____19___thatexpressionsmayinfluenceemotionsratherthanjusttheotherwayaround__20__thephysicalactoflaughtercouldimprovemood
AncientGreekphilosopherAristotleviewedlaughterasabodilyexerciseprecioustohealthBut---__1___someclaimstothecontrarylaughingprobablyhaslittleinfluenceonphysicalfitnessLaughterdoes__2___short-termchangesinthefunctionoftheheartanditsbloodvessels___3_heartrateandoxygenconsumptionButbecausehardlaughterisdifficultto__4__agoodlaughisunlikelytohave__5___benefitsthewaysaywalkingorjoggingdoes __6__insteadofstrainingmusclestobuildthemasexercisedoeslaughterapparentlyaccomplishesthe__7__studiesdatingbacktothe1930’sindicatethatlaughter__8___musclesdecreasingmuscletoneforupto45minutesafterthelaughdiesdown Suchbodilyreactionmightconceivablyhelp_9__theeffectsofpsychologicalstress.Anywaytheactoflaughingprobablydoesproduceothertypesof___10___feedbackthatimproveanindividual’semotionalstate.__11____oneclassicaltheoryofemotionourfeelingsarepartiallyrooted____12___physicalreactions.Itwasarguedattheendofthe19thcenturythathumansdonotcry___13___theyaresadbuttheybecomesadwhenthetearsbegintoflow Althoughsadnessalso____14___tearsevidencesuggeststhatemotionscanflow__15___muscularresponses.Inanexperimentpublishedin1988socialpsychologistFritzStrackoftheUniversityofwürzburginGermanyaskedvolunteersto__16___apeneitherwiththeirteeth-therebycreatinganartificialsmile–orwiththeirlipswhichwouldproducean__17___expression.Thoseforcedtoexercisetheirenthusiasticallytofunnycatoonsthandidthosewhosemonthswerecontractedinafrown____19___thatexpressionsmayinfluenceemotionsratherthanjusttheotherwayaround__20__thephysicalactoflaughtercouldimprovemood
某计算机存储器按字节编址虚拟逻辑地址空间大小为16MB主存物理地址空间大小为1MB页面大小为4KBCache采用直接映射方式共8行主存与Cache之间交换的块大小为32B系统运行到某一时刻时页表的部分内容和Cache的部分内容分别如题44-a图题44-b图所示图中页框号及标记字段的内容为十六进制形式 请回答下列问题 1虚拟地址共有几位哪几位表示虚页号物理地址共有几位哪几位表示页框号物理页号 2使用物理地址访问Cache时物理地址应划分成哪几个字段要求说明每个字段的位数及在物理地址中的位置 3虚拟地址001C60H所在的页面是否在主存中若在主存中则该虚拟地址对应的物理地址是什么访问该地址时是否Cache命中要求说明理由 4假定为该机配置一个4路组相联的TLB该TLB共可存放8个页表项若其当前内容十六进制如题44-c图所示则此时虚拟地址024BACH所在的页面是否在主存中要求说明理由
现场观察在采访中的功能
AncientGreekphilosopherAristotleviewedlaughterasabodilyexerciseprecioustohealthBut---__1___someclaimstothecontrarylaughingprobablyhaslittleinfluenceonphysicalfitnessLaughterdoes__2___short-termchangesinthefunctionoftheheartanditsbloodvessels___3_heartrateandoxygenconsumptionButbecausehardlaughterisdifficultto__4__agoodlaughisunlikelytohave__5___benefitsthewaysaywalkingorjoggingdoes __6__insteadofstrainingmusclestobuildthemasexercisedoeslaughterapparentlyaccomplishesthe__7__studiesdatingbacktothe1930’sindicatethatlaughter__8___musclesdecreasingmuscletoneforupto45minutesafterthelaughdiesdown Suchbodilyreactionmightconceivablyhelp_9__theeffectsofpsychologicalstress.Anywaytheactoflaughingprobablydoesproduceothertypesof___10___feedbackthatimproveanindividual’semotionalstate.__11____oneclassicaltheoryofemotionourfeelingsarepartiallyrooted____12___physicalreactions.Itwasarguedattheendofthe19thcenturythathumansdonotcry___13___theyaresadbuttheybecomesadwhenthetearsbegintoflow Althoughsadnessalso____14___tearsevidencesuggeststhatemotionscanflow__15___muscularresponses.Inanexperimentpublishedin1988socialpsychologistFritzStrackoftheUniversityofwürzburginGermanyaskedvolunteersto__16___apeneitherwiththeirteeth-therebycreatinganartificialsmile–orwiththeirlipswhichwouldproducean__17___expression.Thoseforcedtoexercisetheirenthusiasticallytofunnycatoonsthandidthosewhosemonthswerecontractedinafrown____19___thatexpressionsmayinfluenceemotionsratherthanjusttheotherwayaround__20__thephysicalactoflaughtercouldimprovemood
在子网192.168.4.0/30中能接收目的地址为192.168.4.3的IP分组的最大主机数是
用户程序发出磁盘I/O请求后系统的正确处理流程是
下列给出的指令系统特点中有利于实现指令流水线的是 Ⅰ.指令格式规整且长度一致 Ⅱ.指令和数据按边界对齐存放 Ⅲ.只有Load/Store指令才能对操作数进行存储访问
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