Developing the project schedule is often an iterative process. It determines the planned start and finish dates for project activities and milestones. Schedule development can require the review and revision of duration estimates and resource estimates to create an approved project schedule that can serve as a baseline to（）progress. analyze。 track。 level。 extend。
船舶从事（）活动，应当按照《中华人民共和国海事行政许可条件规定》的规定，取得海事管理机构的许可，并遵守相关操作规程，落实安全和防治污染措施。 ①在沿海港口进行舷外拷铲、油漆作业； ②使用焚烧炉； ③在港区水域内洗舱、清舱、驱气以及排放压载水的； ④冲洗沾有污染物、有毒有害物质的甲板的； ⑤船舶内部驳运燃油或污油水。 ①②③④⑤。 ①②③④。 ①③④⑤。 ①②③⑤。
Estimating activity durations uses information on activity scope of（），required resource types, estimated resource quantities, and resource calendars. milestone。 baseline。 quality。 work。
During the project, requirements change for a variety of reasons. As needs change and as work proceeds, additional requirements are derived and changes may have to be made to the existing requirements. It is essential to manage these additions and changes efficiently and effectively. To effectively analyze the impact of the changes, it is necessary that the source of each requirement is known and the rationale for any change is documented. The project manager may, however, want to track appropriate measures of requirements volatility to judge whether new or revised（）are necessary. proceedings。 controls。 forecastings。 Prelibations。
The receiving activities conduct analyses of the requirements with the requirements provider to ensure that a compatible, shared understanding is reached on the meaning of the requirements. The result ofthis analysis and dialog is an（）set of requirements. agreed-to。 agree-to。 agree-to-do。 agree-with。
《中华人民共和国船舶及其有关作业活动污染海洋环境防治管理规定》，自（）起施行。
