无链牵引采煤机的优点之一是消除由于牵引链工作中的脉动引起采煤机移动不平稳。（）
参考答案：对
A client has a perforated nasal septum. The nurse correctly judges the client to be a user of which of the following substances
A．Heroin.
B．Cocaine.
C．LSD.
D．Marijuana.
桃仁可治疗的病证是（）郁金可治疗的病证是（）
A.食积胀痛
B.肠燥便秘
C.血虚经闭
D.产后浮肿
E.热病神昏
