积证具有无积块，腹中气时聚时散，发有休止，痛无定处，病程较短，一般病情较轻，治疗较易等特点
参考答案：错
表示计量资料集中趋势的指标是（）。
A.样本标准差
B.总体标准差
C.标准误
D.几何均数
E.变异分数
The good result____ the correct methods, that is to say,correct methods the good result. [ ]
A. lies; lead
B. lead to; lie in
C. lies in; lead to
D. lies to; lead to
