The project plan is developed by ______.

A) the project manager
B) the manager of project managers
C) the project team
D) A and C

属合格的烧结空心砖，其大面抗压强度平均值应（）

A.≥5.0Mpa

B.≥4.0Mpa

C.≥3.0Mpa

D.≥2.0Mpa