根据分子结构的不同，着色颜料可分为无机颜料和（）颜料。

A.混合

B.无机

C.天然

D.无色

Executing processes are concerned with （）.

A．recognizing that a project or phase should begin

B．coordinating people and other resources to carry out the plan

C．devising and maintaining a workable method to accomplish the business need that the project was undertaken to address

D．ensuring that the project objectives are met by monitoring and measuring progress and taking corrective action when necessary