必须经省级卫生行政部门审批并取得执业许可的母婴保健技术服务项目是()
A.结扎手术
B.产前诊断
C.终止妊娠手术
D.婚前医学检查
E.卫生咨询服务
参考答案:B
________ more careful, his ship would not have sunk.
A.If the captain were
B.Had the captain been
C.Should the captain be
D.If the captain would have been
下列不属于传染源的是()
A.易感人群
B.受感染的动物
C.病原携带者
D.患者
E.隐性感染者