泡沫产生器无法发泡或发泡不正常的原因不包括（ ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='23346' and id < 2038280 and id<>'2038280' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='23346' and id > 2038280 and id<>'2038280' order by id asc limit 5