港股通总额账户可用余额计算公式为（）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30016' and id < 2431531 and id<>'2431531' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30016' and id > 2431531 and id<>'2431531' order by id asc limit 5