在边际储蓄倾向等于20%时,边际消费倾向等于(     )｡

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='1850' and id < 121249 and id<>'121249' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='1850' and id > 121249 and id<>'121249' order by id asc limit 5