经常哮喘发作者,为减轻气管黏膜水肿术前可选用的药物为()。
A.地塞米松
B.多巴胺
C.氨茶碱
D.麻黄碱(麻黄素)
E.抗生素
参考答案:A
Reportedly, yesterday a group of American soldiers were walking along the road in Iraq when a bomb was _______, three of whom were killed.
A.set off
B.set out
C.set up
D.set about
护士与床位之比不少于()
A.0.5:1
B.0.2:1
C.0.1:1
D.0.3:1
E.0.4:1