单项选择题______is one of the techniques used for estimating activity durations.
单项选择题One tool that is useful during both analysis and design is the ______,which is a pictorial representation of the items of infonnation(entities)within the system and the relationships between these pieces of information.
单项选择题The connection between two networks to form an internet is handled by a machine known as a ______.
单项选择题项目协调的监理方法主要包括______。 ①监理会议 ②监理报告 ③沟通 ④评审
单项选择题从监理的角度来分类,以下不属于监理总控类文档的是______。