CT模拟定位过程不包括以下哪项（）

A.确定患者治疗体位

B.选择合适的条件作断层扫描

C.利用虚拟软件重建患者假体

D.确定等中心位置

E.确定射野方向

Which of the following is true about critical chain

A．It is a technique that allows development of an optimum project schedule when resources are unlimite

B．It is a technique that modifies the project schedule to account for limited resource

C．It is another name for the bar char

D．It is primarily used to ensure safety in major construction project