第一章较为详细地论述了一般留置权的概念、成立消灭条件、特征，是整篇论文的理论基础，为随后对船舶留置权的研究作了铺垫。
Chapter ⅰ dwells upon the concept and characteristics of traditional possessory lien , which is the academic basis for the subsequent study on the possessory lien on vessel .
一般留置权