瘀结水留型鼓胀的最佳治疗方剂为（）。
A.代抵当汤
B.调营饮
C.抵当汤
D.膈下逐癖汤
E.中满分消丸
参考答案：B
In the following statements about graph operations，which one is NOT correct
A．Finding critical path is an operation on directed graph
B．Finding critical path is an operation on undirected graph
C．Spanning tree of a graph may not be unique
D．Minimum spanning tree of a graph may not be unique
