正项等比数列{a n}中，若a 5?a 7=16，则a 6=

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='13517' and id < 1098025 and id<>'1098025' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='13517' and id > 1098025 and id<>'1098025' order by id asc limit 5