单口网络中其入端阻抗Z=R+jX，则下列说法正确的是（   ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69471' and id < 4499952 and id<>'4499952' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69471' and id > 4499952 and id<>'4499952' order by id asc limit 5