08-09年度电工与电子技术课程试卷B及答案

熟悉建筑节能设计标准中有关暖通空调制冷部分、暖通空调制冷设备产品标准中设计选用部分、环境保护及卫生标准中有关本专业的规定条文。掌握上述标准中有关本专业的强制性条文。constructionworkareaintheformofconferencereviews.(2)reviewprogramreviewdateisdeterminedbytheprojectmanager;AccordingtotheprojectmanagerofprojectqualitycontrolDepartmentrequirespreparationofamanagementplan,representativeofthemanagementauditoftheproject,approvedbytheprojectmanager;ReviewProjectOfficeissuednoticesofmeetings;Projectmanagerfacilitatesthereviewmeeting,scheduledcontentunderreview;QualitycontrolDepartmentisresponsiblefortherecords,thepreparationofthereviewreportandcorrectiveactionplan,representativeofthemanagementauditoftheproject,approvedbytheprojectmanager;QualitycontrolDepartmentisresponsibleforthepreparationofrecordsandreportsthedistributionlist,orpublishtotheInternetbyengineeringpartoftheprojectstaffanddepartments.OrganizedbythequalitycontrolDepartmentisresponsiblefortrackingtheimplementationofcorrectivemeasuresinspections.3.4.5theoutputfromthemanagementreviewshallincludethefollowingelements:theeffectivenessandsuitabilityofthequalitymanagementsystem,whetheritbemaintainedandrevised;Qualitypolicyandqualityobjectivesareachievedandtomeetcustomerrequirements,whetheritbemaintainedandrevised;Theallocationofresourcestomeetrequirements,whetheryouneedtoaddoradjust.3.4.6correctiveactiontrackingandverificationontheissuesraisedinthereview,bytheprimaryresponsibilityofdepartmentsdrawupcorrespondingspecificcorrective,preventiveandcorrectivemeasures,andseriouslyimplemented.ProjectqualitycontrolDepartmentisresponsibleforthetracking,verificationandevaluationtheeffectofcorrectiveandpreventiveactions.3.4....(1)thesafetyprogramsanddepartmentsdealingwiththeformationofurbanspatial班级（学生填写）：姓名：学号：命题：任红卫审题：审批：---------------------------------------------------密----------------------------封---------------------------线-------------------------------------------------（答题不能超出密封线）2008∼2009学年第二学期电工与电子技术科目考试试题B卷使用班级（老师填写）：分析专07-1、2题号一二三四五六七八九总分得分阅卷人一、单项选择题(本题24分，每个小题2分)1、把图1所示的电路改为图2的电路，其负载电流I1和I2将（）A.增大B.不变C.减小2、电路分析中，支路上的电流的参考方向（）。A．与实际电流方向是一致的，B.是可以任意选择的，C.与电压方向一致。3、图1-3示电路中，对负载电阻RL而言，点划线框中的电路可用一个等效电源代替，该等效电源是()。A.理想电压源B.理想电流源C.不能确定4、如图1-4示，正弦电流通过电容元件时，下列关系式中正确的是()A.uci1B.IUCC.UCIjUIUIRLSS++iuC+－图1-3图1-4熟悉建筑节能设计标准中有关暖通空调制冷部分、暖通空调制冷设备产品标准中设计选用部分、环境保护及卫生标准中有关本专业的规定条文。掌握上述标准中有关本专业的强制性条文。constructionworkareaintheformofconferencereviews.(2)reviewprogramreviewdateisdeterminedbytheprojectmanager;AccordingtotheprojectmanagerofprojectqualitycontrolDepartmentrequirespreparationofamanagementplan,representativeofthemanagementauditoftheproject,approvedbytheprojectmanager;ReviewProjectOfficeissuednoticesofmeetings;Projectmanagerfacilitatesthereviewmeeting,scheduledcontentunderreview;QualitycontrolDepartmentisresponsiblefortherecords,thepreparationofthereviewreportandcorrectiveactionplan,representativeofthemanagementauditoftheproject,approvedbytheprojectmanager;QualitycontrolDepartmentisresponsibleforthepreparationofrecordsandreportsthedistributionlist,orpublishtotheInternetbyengineeringpartoftheprojectstaffanddepartments.OrganizedbythequalitycontrolDepartmentisresponsiblefortrackingtheimplementationofcorrectivemeasuresinspections.3.4.5theoutputfromthemanagementreviewshallincludethefollowingelements:theeffectivenessandsuitabilityofthequalitymanagementsystem,whetheritbemaintainedandrevised;Qualitypolicyandqualityobjectivesareachievedandtomeetcustomerrequirements,whetheritbemaintainedandrevised;Theallocationofresourcestomeetrequirements,whetheryouneedtoaddoradjust.3.4.6correctiveactiontrackingandverificationontheissuesraisedinthereview,bytheprimaryresponsibilityofdepartmentsdrawupcorrespondingspecificcorrective,preventiveandcorrectivemeasures,andseriouslyimplemented.ProjectqualitycontrolDepartmentisresponsibleforthetracking,verificationandevaluationtheeffectofcorrectiveandpreventiveactions.3.4....(1)thesafetyprogramsanddepartmentsdealingwiththeformationofurbanspatial5、晶体管的电流放大系数是指（）。A.工作在饱和区时的电流放大系数B.工作在放大区时的电流放大系数C.工作在截止区时的电流放大系数6.工作在放大状态的晶体管，各极的电位应满足（）。A.发射结正偏，集电结反偏B.发射结反偏，集电结正偏C.发射结、集电结均反偏D.发射结、集电结均正偏7、在图1-5示电路中，US，IS均为正值，其工作状态是()。A.电压源发出功率B.电流源发出功率C.电压源和电流源都不发出功率图1-58、在画放大电路的交流通路时常将耦合电容视作短路，直流电源也视为短路，这种处理方法是()。A.正确的B.不正确的C.耦合电容视为短路是正确的，直流电源视为短路则不正确9．在计算戴维南定理求等效电阻时，应将原电路的电源置零，电源置零意味着（）。A.电压源开路、电流源短路B.电压源短路、电流源开路B.电压源开路、电流源开路D.电压源短路、电流源短路10.以下具有对称三相负载特性的是（）。A、321ZZZ；B、321ZZZ；C、Z1=Z2=Z311、图1-6示电路中，电压U和电流I的关系式为()。A.U=25IB.U=25IC.U=25ID.U=25+I12、某支路如1-7图所示，4A电流源产生的功率P=()熟悉建筑节能设计标准中有关暖通空调制冷部分、暖通空调制冷设备产品标准中设计选用部分、环境保护及卫生标准中有关本专业的规定条文。掌握上述标准中有关本专业的强制性条文。constructionworkareaintheformofconferencereviews.(2)reviewprogramreviewdateisdeterminedbytheprojectmanager;AccordingtotheprojectmanagerofprojectqualitycontrolDepartmentrequirespreparationofamanagementplan,representativeofthemanagementauditoftheproject,approvedbytheprojectmanager;ReviewProjectOfficeissuednoticesofmeetings;Projectmanagerfacilitatesthereviewmeeting,scheduledcontentunderreview;QualitycontrolDepartmentisresponsiblefortherecords,thepreparationofthereviewreportandcorrectiveactionplan,r