室上速时不适合直流电复律的情况是()
A.低血压
B.应用洋地黄者
C.食管心房调搏无效时
D.严重心绞痛
E.充血性心力衰竭
参考答案:B
止血药中,能清肺胃热的药物是()
A.白茅根
B.小蓟
C.槐花
D.三七
E.地榆
Jack ran for a doctor; ________,we stayed with the patient. [ ]
A. otherwise
B. sometimes
C. meanwhile
D. besides