题目内容
非水滴定法测定维生素B1原料药的含量,应选
2021-10-19
A.淀粉指示剂
B.喹哪啶红-亚甲蓝混合指示剂
C.二苯胺指示剂
D.邻二氮菲指示剂
E.酚酞指示剂
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='26076' and id < 2185946 and id<>'2185946' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26076' and id > 2185946 and id<>'2185946' order by id asc limit 5