支气管扩张大咯血的病理基础是
A.感染所致粘膜充血水肿
B.病灶部位毛细血管通透性增高
C.动脉终末支扩张形成动脉瘤
D.慢性溃疡侵蚀肺小血管
E.支气管壁破坏
参考答案:C
Since you are free now, why not _____? [ ]
A. doing some washing
B. to do washing
C. to do some washing
D. do some washing
实行简易申报的定期定额个体工商户,按照税收法律法规及相关规定缴清应纳税款,当期(指纳税期)可以不办理申报手续。