球后溃疡
参考答案:球后溃疡:溃疡发生在球部以下、十二指肠 * * 以上,约占DU的5%,多具有DU的特点,但夜间痛和背部放射痛更多见,对药物治疗效果较差,较易并发出血。
-- ______did your uncle leave his hometown ?--He ______ for nearly twenty years.
A.When, has left
B.When, has been away
C.How long, has left
D.How long, has been away
可产生顺行性遗忘,无术中记忆的静脉药物是()。
A.丙泊酚
B.咪达唑仑
C.氯胺酮
D.依托咪酯
E.硫喷妥钠