图示二端口网络的Z参数依次为（）i2。 

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32636' and id < 2595077 and id<>'2595077' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32636' and id > 2595077 and id<>'2595077' order by id asc limit 5