题目内容
适合作润湿剂的表面活性剂的HLB值范围是
2021-12-27
A.HLB值为1～3
B.HLB值为3～6
C.HLB值为7～9
D.HLB值为8～18
E.HLB值为15～18
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='30244' and id < 2446578 and id<>'2446578' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30244' and id > 2446578 and id<>'2446578' order by id asc limit 5