队列研究中,队列的成员必须
A.种族相同B.经历过同样的时期C.居住在同一地区D.有相同的暴露史E.有相同性别
参考答案:D
Do you know our new Maths teacher, Mrs. White? She is _______ mother. [ ]
A. Jim and Kate
B. Jim and Kate's
C. Jim's and Kate
D. Jim's and Kate's
男,30岁。外伤后急性失血约1000ml,给予手术止血,并输注平衡盐溶液和羟乙基淀粉,术后查体:P 95次/分,BP 100/60mmHg。Hb 80g/L。此时应采取的治疗措施是
A.输注红细胞悬液1单位B.输注红细胞悬液5单位C.输注全血1000mlD.输注血浆400mlE.暂开输血,继续观察