评估结构件和比较简单的大型冲压模具的常用方法是（）。

A.指数估价法

B.类比估价法

C.重量估价法

D.综合估价法

Positive symptoms of schizophrenia include which of the following

A. Waxy flexibility, alogia, and apathy.
B. Flat affect, avolition, and anhedonia.
C. Hallucinations, delusions, and disorganized thinking.
D. Somatic delusions, echolalia, and a flat affect.