题目内容
易通过食物链引起生物富集的物质是
2021-10-08
A.酸雨
B.甲基汞
C.甲醛
D.二氧化碳
E.金属化合物
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='25008' and id < 2129674 and id<>'2129674' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25008' and id > 2129674 and id<>'2129674' order by id asc limit 5