Semantics
参考答案:
Semantics: The study of meaning in language is called semantics.
下列不属于肝系病主症的是
A.脘腹疼痛
B.头晕目眩
C.四肢体麻木
D.项强急,四肢抽搐
E.黄疸
简述冶炼过程中碳氧反应的作用。