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一、了解Java图形程序设计类 二、使用框架、面板和U1组件 三、理解布局管理器的作用 四、熟悉 Color、font类 五、使用 Graphics类绘图 六、熟悉Java事件
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第一节两项百分数资料的假设测验 一、单个样本百分数(或成数)的统计假设测验 这是测验一个样本百分数的总体百分数P与某一理论 值或期望值P的差异显著性。由于np和nq都大于5时二项 分布趋近于正态,所以可用u测验,但需进行连续性矫正; 如果np和nq都大于30,则可不进行连续性矫正;如果np 或nq小于5,则宜用二项式展开直接计算或进行连续性矫 正后的t测验,按df=n-1查表
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Additional copies of the Guidebook for the Preparation of haccP plans and the generic hAcCP Models are available from U.S. Department of Agriculture Food Safety and Inspection Service(FSIS) Office of Policy, Program Development and Evaluation(OPPDE) Inspection Systems Development Division Room 202, Cotton Annex Building
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Additional copies of the Guidebook for the Preparation of haccP plans and the generic hAcCP Models are available from U.S. Department of Agriculture Food Safety and Inspection Service(FSIS) Office of Policy, Program Development, and Evaluation(OPPDE Inspection Systems Development Division Room 202, Cotton Annex Building
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Additional copies of the Guidebook for the Preparation of haccP plans and the generic hAcCP Models are available from U.S. Department of Agriculture Food Safety and Inspection Service(FSIS) Office of Policy, Program Development and Evaluation(OPPDE) Inspection Systems Development Division Room 202, Cotton Annex Building
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The lowpass filter H(u) has a cutoff frequency wc=205T rad/ sec. Thus, c(t)is r(t) where all terms with frequency above we are removed by the lowpass filter. The terms which are kept have kwol 205T rad /sec k|< 10.25, so the output, ac(t),is r(t)= To obtain n, we sample c(t) every T=5 10-3 seconds with an impulse train The sampling frequency is 400T=2 x maximum frequency in c(t). Therefore
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Unit Five Text B I. Pre-Reading Task 1.\Intel is the name of a(n A U.S. company B. IBM computer C government department D branch of the Internet 2. China is a country scientists and engineers in terms of computing technology
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并联运行的优点 1、提高供电的可靠性 2、提高供电的经济性 3、提高电能的质量(主要是U和f)
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一、凸极发电机的电势方程式 1、已知间功率因数角ψ 按照电势方程式的关系作出相量图 2、知内功率因数角ψ (1)利用方程式求出v:EQ=U+n1+j1x (2)利用公式求出v:平=acam-!+Usn
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ECENOMIC S U.S. Real gross domestic Product
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