1447| 0
|
[执业医师] 欲对某社区居民的健康状况进行调查研究,计划按居民的门牌号每隔5户抽1户,然后在选中 |
手机版|会员|至尊|接种|公卫人 ( 沪ICP备06060850号-3 )
GMT+8, 2024-6-12 07:00 , Processed in 0.059900 second(s), 7 queries , Gzip On, MemCached On.
Powered by Discuz! X3.4
© 2001-2023 Discuz! Team.