She is my friend. name is Linda.[ ]
A. His
B. Her
C. Your
答案:B
确诊肝脓肿的重要CT征象为()
A.圆形病灶内见气体和(或)液面
B.平扫呈环形略低密度灶
C.增强扫描环形强化
D.增强扫描病灶外周可见低密度水肿带
E.病变边界清晰
池塘在缺氧条件下,嫌气性细菌大量繁殖会产生有毒气体如()。
A、氧气
B、氯气
C、氨、硫化氢、甲烷等
D、氢气