物种多样性的一个重要原因是                       。

Organizations perform work to achieve a set of objectives. All of the following are true about projects and operations work EXCEPT:

A．Both projects and operations are constrained by limited resource

B．Operations are ongoing and repetitive, while projects are temporary and uniqu

C．Both projects and operations are planned, executed, and controlle

D．All activities in the organization can be addressed within the organization’s normal operational limit Therefore, projects are rarely utilized as a means of achieving an organization’s strategic pla