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position的取值有哪些
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下列哪个属性值为相对于浏览器窗口进行定位
不属于float的取值的是：
Normally a student must attend a certain number of courses in order to graduate, and each course which he attends gives him a credit which he may count towards a degree,In many American universities the total work for a degree consists of thirty-six courses each lasting for one semester. A typical course consists of three classes per week for fifteen weeks;while attending a university a student will probably attend four or five courses during each semester. Normally a student. Would expect to take four years attending two semesters each year. It is possible to spread the period of work for the degree over a longer period. It is also possible for a student to move between one university and another during his degree course,though this is not in fact done as a regular practice.For very course that the follows a student is given a grade,which is recorded, and the record is availablefor the student to show to prospective employers.All this imposes a constant pressure and strain of work,but in spite of this some students still find time for great activity in student affairs.Elections to positions in student organizations arouse much enthusiasm.The effective work of maintaining discipline is usually performed by students who advise the academic authorities.Any student who is thought to have broken therules,for example,by cheating his to appear before a student court.With the enormous numbers of students, the operation of the system does involve a certain amount of activity.A student who has held one of these positions of authority is much respected and it will be of benefit to him later in his career.(1)、 Normally a student would at least attend ______ classes each week.(2)、 According to the first paragraph an American student is allowed ______.(3)、America university students are usually under pressure of work because__________(4)、Some students are enthusiastic for positions in student organizations probably because______(5)、The student organizations seem to be effective in ___________
下列结构不属于下丘脑的是( )
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