建设工程施工阶段进度控制的最终目的是( )。
A.保证工程项目按期建成交付使用B.如期进行竣工验收C.确保项目周期D.确定里程碑事件
参考答案:A
食盐、食醋、纯碱等为家庭厨房中常用的物质.利用这些物质,你能完成的实验是( )
①检验自来水中是否含有氯离子 ②鉴别食盐和纯碱 ③鉴别烧碱和氢氧化钾
④除去热水瓶中的水垢 ⑤检验鸡蛋壳能否与酸反应.
A.③④⑤
B.②④⑤
C.②③④⑤
D.①③④⑤
(31) analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems. Ultimately, the system models become the (32) for designing and constructing an improved system. (33) is such a technique. The emphasis in this technique is process-centered. Systems analysts draw a series of process models called (34) . (35) is another such technique that integrates data and process concerns into constructs called objects.
A.Prototyping
B.Accelerated
C.Model-driven
D.Iterative