第一部分是绪论，阐明了本研究的选题背景、目的与意义、主要内容和方法。

Part One is an introduction, elaborating the backgrounds, significance, purpose, main contents and methods of this study.

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概括介绍了面对未来挑战中国石化总公司科技研究与开发活动的管理体制、管理方法和主要内容。

The paper generally introduces management system, management methods and main contents of SINOPEC scientific research and development activities confronting future challenges.

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论文阐述了研究水利水电工程造价控制的背景与研究意义，提出了论文研究的主要内容和方法。

This paper addresses the background of hydropower project cost study and study significance, putting forward the main contents and method of the paper study.

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