Two common methods of drawing progress network are两种常用的进度网络绘图方法是()。 A.
Aticivity on node method(AON) and Atitivity on arrow method (AOA) 节点法与箭线法 B.
Aticivity on node method(AON) and Conditional diagramming methods 节点法与条件图法 C.
Aticivity on node method(AON) and Logical bar chart method      节点法与逻辑横道图法 D.
Aticivity on node method(AON) and Precedence Diagramming Method (PDM) 节点法与前导图法