紫外分光光度计在紫外光区使用的光源是

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='29766' and id < 2417052 and id<>'2417052' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29766' and id > 2417052 and id<>'2417052' order by id asc limit 5