毕业论文AcknowledgementsI hope to express my thanks and appreciation to my advisor,Mr.Lai Peiquan,whose careful reading has been invaluable to methrough my thesis writing.His useful suggestions were helpful to mefrom choosing my topic to finalizing my thesis writing.My thanksshould also be given to all the teachers who have taught me all mycourses.Without their enthusiasm and supports,this thesis would nothave come out.I am also grateful to my classmates,group members androommates for their psychological supports and encouragements.Inparticular,I gave my thanks to Li Weixian,who not only helped meto find some information,but also gave me many suggestions torevise the thesis,and Chen Xian and Li Yu,who helped me keep intouch with my advisor fluently when I was in troublei
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