题目内容
表面活性剂O/W型乳化剂的HLB值是多少
2021-10-14
A.3~8
B.8~16
C.13~18
D.13~16
E.7~9
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='25712' and id < 2161572 and id<>'2161572' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25712' and id > 2161572 and id<>'2161572' order by id asc limit 5