二尖瓣狭窄患者心脏体格检查的特点是()
A.二尖瓣面容
B.收缩期震颤
C.靴形心
D.心界向左下扩大
E.心尖区可闻及舒张期隆隆样杂音
参考答案:A, E
.
I don’t think ______ possible to master a foreign language without much memory work.
A.that
B.which
C.it
D.this
具有镇痛作用的静脉麻醉药是()
A.氯胺酮
B.γ-OH
C.硫喷妥钠
D.咪达唑仑
E.依托咪酯