I don't know when ____ famous. [ ]
A. does he become
B. he becomes
C. did he become
答案:B
急性上呼吸道感染时的病理变化为()
A.鼻腔及咽黏膜充血、水肿
B.肺水肿、充血
C.有浆液性及黏液性渗出
D.少量单核细胞浸润
E.上皮细胞变性、坏死
外贸企业委托生产企业加工收回后报关出口的货物,在国内购进的原辅材料、支付的加工费,按增值税专用发票上注明的税金数额,全部退税。()