超声图像上,肝脏实质内出现一个圆形液性暗区,首先应考虑为:()
A.包囊虫病
B.肝内出血灶
C.肝脓肿液化
D.肝癌液化或出血
E.肝囊肿
参考答案:E
—Can you go to the concert with us?
—Sorry, I can't. I have _____ homework.[ ]
A. too much
B. much too
C. too many
在工程施工实践中,( )施工组织方式最为经济合理。
A.顺序 B.联合 C.平行 D.流水