心尖部触及舒张期震颤,提示() A.二尖瓣关闭不全 B.二尖瓣狭窄 C.室间隔缺损 发布时间:2017-04-22 13:37 │ 来源:www.tikuol.com 题型:单项选择题 A1型题 问题: 心尖部触及舒张期震颤,提示()A.二尖瓣关闭不全B.二尖瓣狭窄C.室间隔缺损D.动脉导管未闭E.主动脉瓣关闭不全
题型:单项选择题 A1型题 命题“若m>0,则方程x2+x-m=0有实根”的逆否命题应该是[ ]A.若方程x2+x-m=0有实根,则m>0B.若方程x2+x-m=0有实根,则m≤0C.若方程x2+x-m=0无实根,则m>0D.若方程x2+x-m=0无实根,则m≤0 查看答案
题型:单项选择题 A1型题 A man hurried in and asked, “Is there a hospital around I can get some medicine for my wounded hand?”A.thatB.whichC.what D.where 查看答案