用考马斯亮蓝法测定蛋白质浓度，（ )

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='25867' and id < 2171421 and id<>'2171421' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25867' and id > 2171421 and id<>'2171421' order by id asc limit 5