项目控制是一种( )工作,在项目策划的指导下进行。
A. 操作性
B. 执行性
C. 指导性
D. 计划性
How many hours you spend in learning English _____ how well you can learn it.
A. decide
B. decides
C. deciding
D. to decide
在DOS系统中,文件分配表的每个表目存放一个簇号,若簇大小为8192字节,系统能管理的磁盘容量是512M字节,文件分配表的每个表目的长度位数为( )
A. 12
B. 14
C. 15
D. 16
The company has promised to _____ no efforts on the cooperation with us.
A. spare
B. save
C. share
D. make