《四家诗》

天冬的功效是（）。

A.养阴润燥

B.清心火

C.清肺生津

D.养肝明目

E.润肠通便

患者久居潮湿之地而出现关节肌肉疼痛，时轻时重，阴雨天痛甚，舌苔薄白，脉濡缓。治宜选用下列何方（）。

A.防风汤

B.乌头汤

C.薏苡仁汤

D.独活寄生汤

E.麻黄加术汤

William Sidney Porter, known as O. Henry, is most famous for （）.

A. his poems

B. his plays

C. his short stories

D. his novels

如何做好粮堆的全仓密封？

三相系统中短路故障有哪些基本类型？