麻疹患者具有传染性的时期是()
A.接触麻疹后7天至出疹后5天
B.接触麻疹后7天至出疹时
C.出疹开始至出疹后7天
D.出疹后3~7天
E.出疹前5天至出疹后5天
参考答案:E
用电普查工作应以内部检查和相结合的方式进行。
A.现场检查
B.外部检查
C.专项检查
D.全面检查
During the days ________, he worked as a servant at the Browns.
A.followed
B.following
C.to follow
D.that followed