题目内容
我国现行饮用水卫生标准规定，大肠菌群为
2021-10-09
A.小于100个/100ml
B.小于10个/100ml
C.小于5个/100ml
D.小于3个/100ml
E.不得检出/100ml
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='25156' and id < 2134794 and id<>'2134794' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25156' and id > 2134794 and id<>'2134794' order by id asc limit 5