用直肠指检查直肠癌,确诊率可达
A.20%B.40%C.60%D.80%E.90%
参考答案:D
Our hospital needs two ___ doctors, Mrs. Li. You can ask your son to have a try.
A. women B. man C. men
用来定义渗透液渗入裂纹,裂缝等小开口中去的原理的术语是()。
A.饱和
B.毛细作用
C.吸收
D.润湿