我国现行采用的签证制度一次签证多次有效。 ( )

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26620' and id < 2217169 and id<>'2217169' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26620' and id > 2217169 and id<>'2217169' order by id asc limit 5