生产与作业战略的实施是一个（）系统。
A.开环
B.闭环
C.交流
D.信息
参考答案：A
I'm glad to find. that many trees __________ in our city last year. [ ]
A. plant
B. planted
C. were planted
D. are planted
在创建快速报表时，基本带区包括( )。
A．标题、细节和总结
B．页标头、细节和页注脚
C．组标头、细节和组注脚
D．报表标题、细节和页注脚
