如果细胞内结合水与自由水的比值用a表示，则代谢活动强的细胞a1与抗旱性强的细胞a2的大小为

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='21534' and id < 1872311 and id<>'1872311' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='21534' and id > 1872311 and id<>'1872311' order by id asc limit 5