某晶体管的发射极电流为1mA，基极电流为2(VA，则集电极电流为（ ）mA。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30217' and id < 2444172 and id<>'2444172' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30217' and id > 2444172 and id<>'2444172' order by id asc limit 5