如图，箭头指针共指出了几个方向？（ ）个<r-个<r~个<-个个<-个<-<r~个个 

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27170' and id < 2251121 and id<>'2251121' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27170' and id > 2251121 and id<>'2251121' order by id asc limit 5