_______ he is in the school library now. [ ]
A. Maybe
B. May
C. Be
D. May be
答案:A
右肺上叶肿物,大小约3cm,行右肺上叶切除术,术后病理为高分化鳞癌,脏胸膜受侵,同侧支气管旁淋巴结转移2/5,隆突下、纵隔淋巴结未见转移,后续处理是()
A.局部介入化疗
B.术后放疗
C.术后全身化疗
D.观察
E.同步放化疗
什么是商品的“缺陷”?