题目内容
通式为RNH3+X-的阳离子表面活性剂是
2021-10-14
A.硬脂酸钠
B.苯扎溴铵
C.卵磷脂
D.聚乙烯醇
E.聚山梨酯80
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='25719' and id < 2162370 and id<>'2162370' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25719' and id > 2162370 and id<>'2162370' order by id asc limit 5