etoh

液液萃取法可选用的溶剂系统有A、HO－EtOB、HO－MeCOC、HO－CHClD、EtOH－CHClE、HO－MeOH 液液萃取法可选用的溶剂系统有 A、H<img src='https://img2.soutiyun.com/ask/uploadfile/11412001-11415000/5d91e6f8d867c0bca16ac1e2cedd964a.gif' />O-Et<img src='https://img2.soutiyun.com/ask/uploadfile/11412001-11415000/5d91e6f8d867c0bca16ac1e2cedd964a.gif' />O B、H<img src='https://img2.soutiyun.com/ask/uploadfile/11412001-11415000/5d91e6f8d867c0bca16ac1e2cedd964a.gif' />O-Me<img src='https://img2.soutiyun.com/ask/uploadfile/11412001-11415000/5d91e6f8d867c0bca16ac1e2cedd964a.gif' />CO C、H<img src='https://img2.soutiyun.com/ask/uploadfile/11412001-11415000/5d91e6f8d867c0bca16ac1e2cedd964a.gif' />O-CHCl<img src='https://img2.soutiyun.com/ask/uploadfile/11412001-11415000/f7486040ca8480f269736716526dae7d.gif' /> D、EtOH-CHCl<img src='https://img2.soutiyun.com/ask/uploadfile/11412001-11415000/f7486040ca8480f269736716526dae7d.gif' /> E、H<img src='https://img2.soutiyun.com/ask/uploadfile/11412001-11415000/5d91e6f8d867c0bca16ac1e2cedd964a.gif' />O-MeOH 此题为多项选择题。