题目内容
空气中大量SO2污染产生的二次污染物是
2021-10-08
A.硝酸盐
B.光化学烟雾
C.甲基汞
D.酸雨
E.水体富营养化
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='25008' and id < 2129663 and id<>'2129663' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25008' and id > 2129663 and id<>'2129663' order by id asc limit 5