电路的阻抗Z=3+j4Ω,则导纳为.（）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='11419' and id < 902173 and id<>'902173' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='11419' and id > 902173 and id<>'902173' order by id asc limit 5