Your project has a number of different work results. You are collecting information about these work results such as what costs have been incurred or committed and which deliverables have been completed and which remain outstanding. You will use this information in which of the following processes

A) Direct and manage project execution.
B) Perform integrated change control.
C) Reprot performance.
D) Verify scope.

调压阀是将（）的压强空气调整到规定压强，供给不同处所使用。