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Aesthetic thought of a distinctively modem bent emerged during the 18th century. The western philosophers of this time devoted much attention to such matters (31) natural beauty and representation. (32) that time, however, the philosophy of art has become ever more (33) and has begun to (34) the philosophy of nature. Various issues (35) to the philosophy of art have had a (36) impact (37) the orientation of 20th century aesthetics. (38) among these are problems relating to the theory of art as form and (39) the distinction between representation end expression. Still another question has to do with the value of art. Two opposing theoretical positions (40) on this issue: one holds that art and its appreciation are a means to some recognized moral good, (41) the other maintains that art is intrinsically valuable end is an end in itself. Underlying this whole issue is the concept of taste. In recent years there has also been an increasing (42) with art as the prime object of critical judgment. Corresponding to the trend in contemporary aesthetic thought, (43) have followed (44) of two approaches. In one, criticism is restricted to the analysis end interpretation of the work of art. (45) , it is devoted to articulating the response to the aesthetic object and to (46) a particular way of perceiving it. Over the years, aesthetics has developed into a broad field of knowledge end inquiry. The concerns of contemporary aesthetics include such (47) problems as the nature of style and its aesthetic significance; the relation of aesthetic judgment to culture; the (48) of a history of art; the (49) of Freudian psychology and other forms of psychological study to criticism; and the place of aesthetic judgment in practical (50) in the conduct of everyday affairs.
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Predictions of many robots in industry have yet come true. For ten years or more, manufacturers of big robots have explained how their machines can make industry more competitive and productive. The maker for (21) robots is oversupplied now, and the driving force of the robotics(机器人学) revolution is (22) to be with makers of machines that handle a few kilos at most."Heavy-robot manufacturers are in some difficulty (23) finding customer. They are offering big (24) just to get in the door. There has been a (23) growth everywhere in the numbers of robots, so we admit we are either deceiving (26) or that the market is slowly growing. "said John Reekie, chairman of Colen Robotics. "The following things must happen (27) the robotics revolution to occur. We must achieve widespread robot literacy, (28) there has been a computer (29) program, there must be a robot prices. (30) , some kind of artificial intelligence needs to be (31) ."Colen makes educational robots and machine tools. It is small (32) with companies like ASEA or Fujitsu Fanuc. But Colen with others and departments in universities such as Surrey, Manchester, and Durham possess an advantage (33) . the giants. The big companies sell very expensive (34) to businesses with expert knowledge in automation. The (35) companies make robots for teaching people, and now they have realized that there is a need for small, (36) robots that they can meet.The little companies either bring their educational machines (37) an industrial standard or design from the start. One technique that they all adopt is to choose (38) components where possible. The major cost of making (39) their models is the electronics, which will fall in price. There is (40) scope for reductions in mechanical costs. The sue of standard parts, which are easily replaced, should give these robots a mechanical life of something in the order of five years. 36().
肺性肥大性骨关节病可出现( )
一工字形截面预应力混凝土梁，跨度9m，计算跨度8.75m，净跨度8.5m。承受均布永久荷载标准值gk=16kN/m(已包括梁的自重)，可变荷载标准值qk=14kN/m，准永久值系数ψq=0.5。在50m台座上进行采用先张法施工。混凝土等级为C40。抗裂要求为二级。 已知：σιⅠ=96N/mm2，σιⅡ=147N/mm2，ftk=2.39N/mm2。换算截面特征：A0=9.89×104mm。I0=8.39×109mm4，梁截面下翼缘至换算截面中和轴距离为452mm。预应力钢筋的合力Np0=635.9kN，合力点的偏心距为244mm。 要求：计算荷载效应标准组合、准永久组合下的抗裂性。
(4)根据材料3指出对待毛泽东思想的正确态度是什么
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