预防术后肺不张,下列哪项是错误的
A.术后常规持续应用镇痛剂 B.术前进行深呼吸锻炼C.术前禁烟2周 D.防止术后呕吐误吸E.术前控制呼吸道感染
参考答案:A
Would you please keep silent The weather report ()and I want to listen.
A.is broadcast
B.is being broadcast
C.has been broadcast
D.had been broadcast
流脑和乙脑的重要鉴别点是()