标准正态曲线下,横轴上,从-1.64到1.96的面积为()
A.95%
B.99%
C.47.5%
D.92.5%
E.87.5%
参考答案:D
属于绞窄性肠梗阻的是
A.粘连性肠梗阻
B.肠蛔虫堵塞
C.腹腔肿块压迫致肠梗阻
D.肠扭转
E.炎症性狭窄
, I got better and returned to work.
A.Accidently
B.Normally
C.Eventually
D.Particularly