将一个PowerPoint演7K文稿保存为放映文件，最优的操作方法是（ ）o

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='28848' and id < 2351479 and id<>'2351479' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28848' and id > 2351479 and id<>'2351479' order by id asc limit 5