电子商务将取代现有的中间商。( )
参考答案：错
当人体某处受伤，病菌浸入时，可穿过毛细血管管壁，聚集到受伤部位吞噬病菌的血细胞是______．
A（）is a type of bar chart that illustrates a project schedule.It illustrates the start and finish dates of the terminal elements and summary elements of a project.
A.Gantt chart
B.project histogram
C.milestone chart
D.project flowchart
