下面电子胃镜图片考虑为何种疾病
A.胃石
B.胃内异物
C.胃潴留
D.胃腔胆汁反流
E.胃蛔虫症
参考答案：A
- Would you prefer to watch TV or see a movie?
- ______. It’s up to you to decide.
A．I’d rather stay home
B．Either is OK with me
C．That’s all right
D．That’s not my favourite
对高度30m以下的物料提升机基础，当设计无要求时，基础混凝土强度等级不小于C20，厚度不小于（）mm。
A.200
B.250
C.300
D.500
