乙型肝炎血清学流行率调查中,常用的三大指标是()
A.HBsAg
B.抗-HBc
C.抗-HBe
D.抗-HBs
E.e抗原
参考答案:A, B, D
There's no bus now, and we can't get home _______ by taxi.
A.rather than
B.other than
C.more than
D.less than
用于化脓性链球菌鉴定的试验是()
A.杆菌肽试验
B.奥普托欣试验
C.CAMP试验
D.胆汁七叶苷试验
E.血浆凝固酶试验