引起PNH病人血管内溶血的主要成分是()。
A.血浆
B.免疫球蛋白
C.补体
D.白细胞
E.同种抗体
参考答案:C
Distinguished guests and friends, welcome to our school, _____ the ceremony of the 50th Anniversary this
morning are our alumni (校友) from home and abroad. [ ]
A. Attend
B. To attend
C. Attending
D. Having attended
* * 脓肿采取下列哪种治疗()。
A.药物治疗
B. * * 切开引流术
C.乳腺肿物切除术
D.乳癌根治术
E.乳癌扩大根治本