现代经济发展的三个重要因素是( )。
A.科学
B.技术
C.管理
D.生产工具
参考答案:A,B,C
A middle-aged woman came ____to the bus stop only ___ the bus had gone.
A.to run; to find
B.and run; finding
C.running; to find
D.running; finding
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