下图提示心脏的病变为（）

A.左心室肥大

B.房性期前收缩

C.交界性期前收缩

D.室性期前收缩

E.心房颤动

PDM includes four types of dependencies or precedence relationships…
(73) ，the initiation of the successor activity，depends upon the initiation of the predecessor activity．

A．Finish-to-Start

B．Finish-to-Finish

C．Start-to-Start

D．Start-to-Finish