肝利用酮体，是因为缺乏（    ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='27520' and id < 2271170 and id<>'2271170' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27520' and id > 2271170 and id<>'2271170' order by id asc limit 5