题目内容
房地产图是地籍图、宗地图和房产图的统称。( )
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设随机变量X和Y的联合分布是正方形G=(X，y)：1≤x≤3，1≤y≤3上的均匀分布，试求随机变量U=|X-Y|的概率密度p(u)．
Compare with the short bow, what is the advantage of the long bow
Many students find the experience of attending university lectures to be a confusing and frustrating experience. The lecturer speaks for one or two hours, perhaps (61) the talk with slides, writing up important information on the blackboard, (62) reading material and giving out (63) The new student sees the other students continuously writing on notebooks and (64) what to write. Very often the student leaves the lecture (65) notes which do not catch the main points and (66) become hard even for the students to understand. Most institutions provide courses which (67) new students to develop the skills they need to be (68) listeners and note-takers. (69) these are unavailable, there are many useful study-skills guides which (70) learners to practice these skills independently. In all cases it is important to (71) the problem before actually starting your studies. It is important to (72) that most students have difficulty in acquiring the language skills (73) in college study. One way of (74) these difficulties is to attend the language and study-skills classes which most institutions provide throughout the (75) year. Another basic strategy is to find a study partner with whom it is possible to identify difficulties, exchange ideas and provide support.
进行房地产开发项目可行性分析的核心和重点是研究开发项目的经济效益。某房地产开发项目有四个设计方案，其中甲方案净现值FNPV=200万元，投资现值为3000万元，乙方案净现值FNPV=180万元，投资现值为2000万元，丙方案净现值FNPV=150万元，投资现值为3000万元，丁方案净现值FNPV=200万元，投资现值为2000万元。为了对初步确定方案做进一步分析，拟计算内部收益率，选择不同的折现率进行计算，得到如下结果：当折现率i1=10%时，财务净现值FNPV(i1)=200万元；当折现率i2=12%时，财务净现值FNPV(i2)=-100万元。试根据以上条件，回答下列问题。 被初步选定的最佳方案的内部收益率是( )。
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