肾上腺素用于治疗过敏性休克的无关作用:
A.收缩括约肌
B.舒张支气管
C.收缩血管
D.兴奋心脏
E.抑制组胺
参考答案:A
《传染性非典型肺炎疫情监测方案》规定,农村医疗机构及其医务人员发现传染性非典型肺炎病人或者疑似病人时,向当地县(区、市)疾病预防控制机构报告疫情应在
A.1h内B.3h内C.6h内D.12h内E.8h内
I think you probably know China has adopted a flexible policy () her foreign trade.
A. on
B. with
C. in
D. under