题目内容
电解水方式制氧机的缺点是
2021-10-21
A.产氧慢
B.氧浓度低,有噪声
C.能耗大;电极损耗大,成本高;产氧量小
D.有噪声
E.不适宜长期使用,有一定不良反应
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='26210' and id < 2195526 and id<>'2195526' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26210' and id > 2195526 and id<>'2195526' order by id asc limit 5