冲击面积
参考答案:冲击面积指氧枪喷头喷出的流股与平静金属液面接触时的面积
Mr Smith is an English man. He teaches English well. His English classes are very interesting. He likes us and we like him, too. Mr Smith has two children-Tom and Mary. Tom is seven and his sister, Mary, is four. Tom goes to school but Mary doesn't. Mr Smith likes wearing a T-shirt and jeans(牛仔裤). Football is his favorite sport. After school we often have a baseball match. Sometimes Mr Smith watches and joins us. He plays baseball just for fun.
小题1:Mr Smith is ______.
A.a Chinese teacher
B.an English driver
C.a Japanese teacher
D.an English teacher小题2:How many sons does Mr Smith have?
A.Only one.
B.Two.
C.Three.
D.Not many.小题3:Mary doesn't go to school because ______.
A.she looks beautiful
B.she is seven
C.she is only four
D.she doesn't like school小题4:______ is Mr Smith's favorite sport.
A.Baseball
B.Football
C.Running
D.Volleyball小题5:The story (故事) is about ______.
A.Mr Smith's son
B.Mr Smith
C.Tom and Mary
D.a basketball
对孕激素治疗敏感的是
A.子宫平滑肌肉瘤B.低度恶性子宫内膜间质肉瘤C.高度恶性子宫内膜间质肉瘤D.恶性苗勒管混合瘤E.癌肉瘤