题目内容
高频探头的特点是
2022-01-25
A.波长长和穿透力较强
B.波长短和穿透力较强
C.波长短和穿透力较弱
D.波长长和穿透力较弱
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='31793' and id < 2541728 and id<>'2541728' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31793' and id > 2541728 and id<>'2541728' order by id asc limit 5