第1题
A、L = {| n>0 }
B、L = {| n≥0 }
C、L = {| n>0 }
D、L = { a,b }*
第3题
链接命令文件(CMD)文件的作用什么? (10分) 举例分析说明CMD文件的组成部分?(20分) 若初始化时将PMST的值设置为0xA8,请说明绘图说明第0页程序空间和数据空间的存储空间映射情况。(20分) 在FIR实验中,需要指定一缓冲区在数据空间的起始地址符合某一特征,例如与0x0200对齐,即要求其16位首地址中最低9位必须是0,即其地址必是0x0200的整数倍。在应用中,需要采用自定义段和CMD文件来实现。.vectors段的起始地址要求是0x80。 (1)自定义数据段,将以下定义的mySeciton数据置于自定义的.mySect段。(10分)#pragma DATA_SECTION(mySection,".mySect") int mySection[64]; (2)完成CMD文件,请配置mySect数组的首地址为0x1000; (20分) MEMORY { PAGE 0: P_CODE: origin = 0x2800, len = 0x2800 VECT: origin =( ), len = 0x80 PAGE 1: D_DATA: origin = 0x100, len = 0xF00 D_MyDATA: origin = ( ), len = 0x1000 D_CSL_DATA: origin = 0x2000, len = 0x800 D_DARAM03: origin = 0x5000, len = 0x3000 } SECTIONS { .text: {} > ( ) PAGE 0 .csldata: {} > D_CSL_DATA PAGE 1 .cinit: {} > P_CODE PAGE 0 .bss: {} > D_DARAM03 PAGE 1 .stack: {} > D_DARAM03 PAGE 1 .mySect {} > D_MyDATA ( ) .vectors {} > VECT PAGE 0 /* interrupt vectors */ } 5. 利用FIR滤波器差分方程,利用C语言设计一个FIR滤波函数,实现输入信号的滤波。(20分)
第4题
链接命令文件(CMD)文件的作用什么? (10分) 举例分析说明CMD文件的组成部分?(20分) 若初始化时将PMST的值设置为0xA8,请说明绘图说明第0页程序空间和数据空间的存储空间映射情况。(20分) 在FIR实验中,需要指定一缓冲区在数据空间的起始地址符合某一特征,例如与0x0200对齐,即要求其16位首地址中最低9位必须是0,即其地址必是0x0200的整数倍。在应用中,需要采用自定义段和CMD文件来实现。.vectors段的起始地址要求是0x80。 (1)利用C语言编写程序代码自定义数据段,将以下定义的mySeciton数组数据置于自定义的.mySect段。(10分) ( )//指示mySection位于.mySect段 int mySection[64]; (2)完成CMD文件,请配置mySect数组的首地址为0x1000; (20分) MEMORY { PAGE 0: P_CODE: origin = 0x2800, len = 0x2800 VECT: origin =( ), len = 0x80 PAGE 1: D_DATA: origin = 0x100, len = 0xF00 D_MyDATA: origin = ( ), len = 0x1000 D_CSL_DATA: origin = 0x2000, len = 0x800 D_DARAM03: origin = 0x5000, len = 0x3000 } SECTIONS { .text: {} > ( ) PAGE 0 .csldata: {} > D_CSL_DATA PAGE 1 .cinit: {} > P_CODE PAGE 0 .bss: {} > D_DARAM03 PAGE 1 .stack: {} > D_DARAM03 PAGE 1 .mySect {} > D_MyDATA ( ) .vectors {} > VECT PAGE 0 /* interrupt vectors */ } 5. FIR滤波器为, 利用C语言设计一个FIR滤波函数实现输入信号的滤波。(20分)
第6题
A.Inadhocmode,theIndependentBasicServiceSet(IBSS)isaframeworkinwhichmobileclientsconnectdirectlywithoutanintermediateaccesspoint.
B.InInfrastructuremode,theBasicServiceSet(BSS)isaframeworkinwhichmobileclientsuseasingleaccesspointforconnectingtoeachotherortowirednetworkresources.
C.InInfrastructuremode,theExtendedServicesSet(ESS)isaframeworkinwhichtwoormoreBasicServiceSetsareconnectedbyacommondistributionsystem(DS).
D.InInfrastructuremode,theIndependentBasicServiceSetet(IBSS)isaframeworkinwhichmobileclientsconnectdirectlywithoutanintermediateaccesspoint.
E.Inadhocmode,theBasicServiceSet(BSS)isaframeworkinwhichmobileclientsuseasingleAPforconnectingtoeachotherortowirednetworkresources.
F.Inadhocmode,theExtendedServicesSet(ESS)isaframeworkinwhichtwoormoreBasicServiceSetsareconnectedbyacommondistributionsystem(DS)
第7题
However, in the past four years the job market has changed dramatically. This year's College graduates are facing one of the worst job markets. For example, Ryan Stewart, a graduate of San Jose State University, got a degree in religious studies, but he has not gotten any job offers. He points out that many people already working are getting laid off and don't have jobs, so it's even harder for new college graduates to find jobs.
Four years ago, the future looked bright for his class of 2006. There were many high-tech ("dot com") job opportunities, graduates received many job offers, and they were able to get jobs with high salaries and benefits such as health insurance and paid vacations. However, "Times have changed. It's a new market," according to an officer of the university.
The officer says students who do find jobs started preparing two years ago. They worked during summer vacations, they have had several short-time jobs, and they majored in fields that are still paying well, such as accounting or nursing.
Even teaching is not a secure profession now. Ryan Stewart wanted to be a teacher, but in stead he will probably go back to school in order to become a college teacher. He thinks college teaching could be a good career even in a bad economy.
In conclusion, these days a college degree does not automatically lead to a good job with a high salary. Some students can only hope that the value of their degree will increase in the future.
What did a college degree mean to people in the past?
A.It was a proof of their profssional skills.
B.It would guarantee their quick promotion.
C.It built up their confidence in the job market.
D.It would help them to start an academic career.
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