题目内容
PVA的中文名称为
2022-01-08
A.聚丙烯
B.聚氯乙烯
C.聚乙烯吡咯烷酮
D.聚乙二醇
E.聚乙烯醇
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='30799' and id < 2480467 and id<>'2480467' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30799' and id > 2480467 and id<>'2480467' order by id asc limit 5