我国历史上第一部现代意义上的统计法律是()。
Shona says that in her questionnaire her aim was____.
With the rapid development of petroleum industry, more and more oil products of high quality are being turned out.
胸部 X线表现为:肺部小片浸润影、小脓肿、肺大泡或脓胸。最可能的诊断是()
What types of people were included in the research?
适用于球墨铸铁、高强度灰铸铁及可锻铸铁的焊丝是()。
关于船舶保安计划的说法下列正确的是()。
妊娠 36 周, 产前检查胎背位于母体腹部左侧, 胎心音位于左上腹, 宫底可触及浮球感,其胎方位为()
属于私人、家庭的单项调查资料()。
从性质上讲,消费者与经营者之间的消费者权益争议属于()。