如图所示二端口电路可构成的受控源类型是（   ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69471' and id < 4499903 and id<>'4499903' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69471' and id > 4499903 and id<>'4499903' order by id asc limit 5