Each box is an activity; the number it contains is the duration of the activity in days. The duration of the critical path is （） .

单项选择题Which of the following is not part of a modern quality management concept （ ）

单项选择题Which of the following is not part of the quality assurance process （ ）

单项选择题The （ ） has several major components, including the system kernel, a memory management system, the file system manager, device drivers, and the system libraries.

单项选择题Which of the following elements can be called the key element of a computer （ ）

单项选择题《计算机软件保护条例》规定：对于在委托开发软件活动中，委托者与受委托者没有签订书面协议，或者在协议中未对软件著作权归属做出明确的约定，其软件著作权归（ ） 。