题 目: 作业成本法在船舶服务业的应用研究- 以天津世纪华洋技术服务有限公司为例目录中文摘要(关键词)··········································································································································1英文摘要(关键词)··········································································································································1前言······································································································································································2一、作业成本法··················································································································································3(一)作业成本法的概念特征······························································································································