在数据传输过程中,数据若由串行变至并行或相反,其转换是通过下述电路完成的()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
一项病例对照研究数据如下,其OR值为()
免费的网站请分享给朋友吧