下列哪种卵巢恶性肿瘤术后应动态监测血清CA125以了解是否复发()。
A.颗粒细胞瘤
B.内胚窦瘤
C.绒毛膜癌
D.无性细胞瘤
E.浆液性囊腺癌
参考答案:E
All his attention________on the computer game he was playing,so he even didn't notice his mother
enter the room. [ ]
A. has been fixed
B. was fixing
C. was fixed
D. fixed
当开挖深度()的基坑(槽)的土方开挖、支护、降水工程为超过一定规模的危险性较大的分部分项工程范围
A.超过5m(不含5m)
B.超过5m(含5m)
C.超过3mD.超过7m