在丁型肝炎预防措施中,下列正确的是()
A.用敏感方法筛选供血员
B.提倡用志愿供血员
C.严格掌握输血适应证
D.不采用血液制品
E.使用丁型肝炎疫苗
参考答案:A
Previously ______ at a fast food restaurant, the Smiths were dissatisfied with the unhealthy meals they served there.
A.volunteered
B.to volunteer
C.volunteering
D.having volunteering
尿中哪种红细胞不来源于肾小球源性血尿
A.面包圈形红细胞B.影形红细胞C.小球形红细胞D.双凹圆盘形红细胞E.棘形红细胞